Day 5
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "day5"
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version = "0.1.0"
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[package]
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name = "day5"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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3,225,1,225,6,6,1100,1,238,225,104,0,1102,72,20,224,1001,224,-1440,224,4,224,102,8,223,223,1001,224,5,224,1,224,223,223,1002,147,33,224,101,-3036,224,224,4,224,102,8,223,223,1001,224,5,224,1,224,223,223,1102,32,90,225,101,65,87,224,101,-85,224,224,4,224,1002,223,8,223,101,4,224,224,1,223,224,223,1102,33,92,225,1102,20,52,225,1101,76,89,225,1,117,122,224,101,-78,224,224,4,224,102,8,223,223,101,1,224,224,1,223,224,223,1102,54,22,225,1102,5,24,225,102,50,84,224,101,-4600,224,224,4,224,1002,223,8,223,101,3,224,224,1,223,224,223,1102,92,64,225,1101,42,83,224,101,-125,224,224,4,224,102,8,223,223,101,5,224,224,1,224,223,223,2,58,195,224,1001,224,-6840,224,4,224,102,8,223,223,101,1,224,224,1,223,224,223,1101,76,48,225,1001,92,65,224,1001,224,-154,224,4,224,1002,223,8,223,101,5,224,224,1,223,224,223,4,223,99,0,0,0,677,0,0,0,0,0,0,0,0,0,0,0,1105,0,99999,1105,227,247,1105,1,99999,1005,227,99999,1005,0,256,1105,1,99999,1106,227,99999,1106,0,265,1105,1,99999,1006,0,99999,1006,227,274,1105,1,99999,1105,1,280,1105,1,99999,1,225,225,225,1101,294,0,0,105,1,0,1105,1,99999,1106,0,300,1105,1,99999,1,225,225,225,1101,314,0,0,106,0,0,1105,1,99999,1107,677,226,224,1002,223,2,223,1005,224,329,101,1,223,223,7,677,226,224,102,2,223,223,1005,224,344,1001,223,1,223,1107,226,226,224,1002,223,2,223,1006,224,359,1001,223,1,223,8,226,226,224,1002,223,2,223,1006,224,374,101,1,223,223,108,226,226,224,102,2,223,223,1005,224,389,1001,223,1,223,1008,226,226,224,1002,223,2,223,1005,224,404,101,1,223,223,1107,226,677,224,1002,223,2,223,1006,224,419,101,1,223,223,1008,226,677,224,1002,223,2,223,1006,224,434,101,1,223,223,108,677,677,224,1002,223,2,223,1006,224,449,101,1,223,223,1108,677,226,224,102,2,223,223,1006,224,464,1001,223,1,223,107,677,677,224,102,2,223,223,1005,224,479,101,1,223,223,7,226,677,224,1002,223,2,223,1006,224,494,1001,223,1,223,7,677,677,224,102,2,223,223,1006,224,509,101,1,223,223,107,226,677,224,1002,223,2,223,1006,224,524,1001,223,1,223,1007,226,226,224,102,2,223,223,1006,224,539,1001,223,1,223,108,677,226,224,102,2,223,223,1005,224,554,101,1,223,223,1007,677,677,224,102,2,223,223,1006,224,569,101,1,223,223,8,677,226,224,102,2,223,223,1006,224,584,1001,223,1,223,1008,677,677,224,1002,223,2,223,1006,224,599,1001,223,1,223,1007,677,226,224,1002,223,2,223,1005,224,614,101,1,223,223,1108,226,677,224,1002,223,2,223,1005,224,629,101,1,223,223,1108,677,677,224,1002,223,2,223,1005,224,644,1001,223,1,223,8,226,677,224,1002,223,2,223,1006,224,659,101,1,223,223,107,226,226,224,102,2,223,223,1005,224,674,101,1,223,223,4,223,99,226
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fn main() {
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let contents = std::fs::read_to_string("input")
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.expect("Failed to read file 'input'");
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let it = contents.split(",");
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let mut program = Vec::new();
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for val in it {
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if val.ends_with('\n') {
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let mut s = String::from(val);
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s.pop();
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program.push(s.parse::<i32>().unwrap());
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}
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else {
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program.push(val.parse::<i32>().unwrap());
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}
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}
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// Create a copy of the memory to refresh from
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let backup = program.clone();
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let mut output: i32 = 0;
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println!("Start part 1");
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simulate(&mut program, 1, &mut output);
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program = backup.clone();
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println!("\nStart part 2");
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simulate(&mut program, 5, &mut output);
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}
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fn simulate(v: &mut Vec<i32>, input: i32, output: &mut i32) -> Option<i32> {
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let mut pos = 0;
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loop {
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let mut code = v[pos];
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// Opcodes are ABCDE, where the op is DE
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// the modes for params 1, 2, and 3 as C, B, A
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// respectively.
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let op = code % 100;
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//println!("pos {}, code {}, op {}", pos, code, op);
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let param_3_mode = code / 10000;
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if param_3_mode == 1 {
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code -= 10000;
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}
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let param_2_mode = code / 1000;
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if param_2_mode == 1 {
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code -= 1000;
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}
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let param_1_mode = code / 100;
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if param_1_mode == 1 {
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code -= 100;
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}
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if op == 1 {
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// Add d1 + d2 -> dest
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let d1: i32 = if param_1_mode == 1 {
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v[pos+1]
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} else {
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v[v[pos+1] as usize]
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};
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let d2: i32 = if param_2_mode == 1 {
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v[pos+2]
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} else {
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v[v[pos+2] as usize]
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};
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let dest = v[pos+3] as usize;
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v[dest] = d1 + d2;
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pos += 4;
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continue;
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}
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else if op == 2 {
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// Mult d1 * d2 -> dest
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let d1: i32 = if param_1_mode == 1 {
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v[pos+1]
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} else {
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v[v[pos+1] as usize]
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};
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let d2: i32 = if param_2_mode == 1 {
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v[pos+2]
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}
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else {
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v[v[pos+2] as usize]
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};
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let dest = v[pos+3] as usize;
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v[dest] = d1 * d2;
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pos += 4;
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continue;
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}
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else if op == 3 {
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// Input
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let dest = v[pos+1] as usize;
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v[dest] = input;
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pos += 2;
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}
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else if op == 4 {
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// Output
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let d = if param_1_mode == 1 {
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v[pos+1]
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}
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else {
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v[v[pos+1] as usize]
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};
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println!("{}", d);
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*output = d;
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pos += 2;
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}
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else if op == 5 {
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// Jump if true
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let d1 = if param_1_mode == 1 {
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v[pos+1] as usize
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}
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else {
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v[v[pos+1] as usize] as usize
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};
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let d2 = if param_2_mode == 1 {
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v[pos+2] as usize
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}
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else {
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v[v[pos+2] as usize] as usize
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};
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if d1 != 0 {
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pos = d2;
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}
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else {
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pos += 3;
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}
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}
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else if op == 6 {
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// Jump if false
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let d1 = if param_1_mode == 1 {
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v[pos+1] as usize
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}
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else {
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v[v[pos+1] as usize] as usize
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};
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let d2 = if param_2_mode == 1 {
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v[pos+2] as usize
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}
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else {
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v[v[pos+2] as usize] as usize
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};
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if d1 == 0 {
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pos = d2;
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}
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else {
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pos += 3;
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}
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}
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else if op == 7 {
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// Less than
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let d1: i32 = if param_1_mode == 1 {
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v[pos+1]
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} else {
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v[v[pos+1] as usize]
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};
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let d2: i32 = if param_2_mode == 1 {
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v[pos+2]
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}
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else {
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v[v[pos+2] as usize]
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};
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let dest = v[pos+3] as usize;
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v[dest] = if d1 < d2 { 1 } else { 0 };
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pos += 4;
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}
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else if op == 8 {
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// equals
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let d1: i32 = if param_1_mode == 1 {
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v[pos+1]
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} else {
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v[v[pos+1] as usize]
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};
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let d2: i32 = if param_2_mode == 1 {
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v[pos+2]
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}
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else {
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v[v[pos+2] as usize]
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};
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let dest = v[pos+3] as usize;
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v[dest] = if d1 == d2 { 1 } else { 0 };
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pos += 4;
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}
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else if op == 99 {
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break;
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}
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else {
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panic!("Unknown opcode: {}", code);
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}
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}
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return None;
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_op_1() {
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let mut program = vec![1, 0, 0, 0, 99];
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let mut output: i32 = 0;
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simulate(&mut program, 0, &mut output);
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assert_eq!(program[0], 2);
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}
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#[test]
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fn test_op_2() {
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let mut program = vec![2, 3, 0, 3, 99];
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let mut output: i32 = 0;
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simulate(&mut program, 0, &mut output);
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assert_eq!(program[3], 6);
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}
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#[test]
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fn test_case_3() {
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let mut program = vec![2,4,4,5,99,0];
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let mut output: i32 = 0;
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simulate(&mut program, 0, &mut output);
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assert_eq!(program[program.len() - 1], 9801);
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}
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#[test]
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fn test_case_4() {
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let mut program = vec![1,1,1,4,99,5,6,0,99];
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let mut output: i32 = 0;
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simulate(&mut program, 0, &mut output);
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assert_eq!(program[0], 30);
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assert_eq!(program[4], 2);
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}
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#[test]
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fn immediate_mode_multiply() {
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let mut program = vec![1002,4,3,4,33];
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let mut output: i32 = 0;
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simulate(&mut program, 0, &mut output);
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assert_eq!(program[4], 99);
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}
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#[test]
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fn negative_integers() {
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let mut program = vec![1101,100,-1,4,0];
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let mut output: i32 = 0;
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simulate(&mut program, 0, &mut output);
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assert_eq!(program[4], 99);
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}
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#[test]
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fn position_mode_input_equal_to_8() {
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let mut program = vec![3,9,8,9,10,9,4,9,99,-1,8];
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let mut output: i32 = 0;
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let backup = program.clone();
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simulate(&mut program, 8, &mut output);
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assert_eq!(output, 1);
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program = backup.clone();
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simulate(&mut program, 7, &mut output);
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assert_eq!(output, 0);
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}
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#[test]
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fn position_mode_input_less_than_8() {
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let mut program = vec![3,9,7,9,10,9,4,9,99,-1,8];
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let mut output: i32 = 0;
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let backup = program.clone();
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simulate(&mut program, 8, &mut output);
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assert_eq!(output, 0);
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program = backup.clone();
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simulate(&mut program, 7, &mut output);
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assert_eq!(output, 1);
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}
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#[test]
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fn immediate_mode_input_equal_to_8() {
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let mut program = vec![3,3,1108,-1,8,3,4,3,99];
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let mut output: i32 = 0;
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let backup = program.clone();
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simulate(&mut program, 8, &mut output);
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assert_eq!(output, 1);
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program = backup.clone();
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simulate(&mut program, 7, &mut output);
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assert_eq!(output, 0);
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}
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#[test]
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fn immediate_mode_input_less_than_8() {
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let mut program = vec![3,3,1107,-1,8,3,4,3,99];
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let mut output: i32 = 0;
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let backup = program.clone();
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simulate(&mut program, 8, &mut output);
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assert_eq!(output, 0);
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program = backup.clone();
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simulate(&mut program, 7, &mut output);
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assert_eq!(output, 1);
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}
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#[test]
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fn position_mode_input_is_non_zero() {
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let mut program = vec![3,12,6,12,15,1,13,14,13,4,13,99,-1,0,1,9];
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let mut output: i32 = 0;
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let backup = program.clone();
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simulate(&mut program, 8, &mut output);
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assert_eq!(output, 1);
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program = backup.clone();
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simulate(&mut program, 0, &mut output);
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assert_eq!(output, 0);
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}
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#[test]
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fn immediate_mode_input_is_non_zero() {
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let mut program = vec![3,3,1105,-1,9,1101,0,0,12,4,12,99,1];
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let mut output: i32 = 0;
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let backup = program.clone();
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simulate(&mut program, 8, &mut output);
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assert_eq!(output, 1);
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program = backup.clone();
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simulate(&mut program, 0, &mut output);
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assert_eq!(output, 0);
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}
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#[test]
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fn multi_jump() {
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let mut program = vec![3,21,1008,21,8,20,1005,20,22,107,8,21,20,1006,20,31,1106,0,36,98,0,0,1002,21,125,20,4,20,1105,1,46,104,999,1105,1,46,1101,1000,1,20,4,20,1105,1,46,98,99];
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let mut output: i32 = 0;
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let backup = program.clone();
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simulate(&mut program, 7, &mut output);
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assert_eq!(output, 999);
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program = backup.clone();
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simulate(&mut program, 8, &mut output);
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assert_eq!(output, 1000);
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program = backup.clone();
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simulate(&mut program, 9, &mut output);
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assert_eq!(output, 1001);
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}
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}
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