54 lines
1.4 KiB
Rust
54 lines
1.4 KiB
Rust
use std::{collections::HashMap, fs::read_to_string};
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mod computer;
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fn main() {
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// current time
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let start = std::time::Instant::now();
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let input = read_to_string("input.txt").expect("Input file not found");
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let mut computer = computer::Computer::new(input);
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let computer_len = computer.len();
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'outer: for i in 0..(computer_len) {
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// If the instruction at position `i` can't be flipped
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if !computer.jmp_or_nop_at(i) {
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continue;
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}
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// Stores the indexes already executed.
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let mut map: HashMap<usize, bool> = HashMap::new();
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computer.flip(i);
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loop {
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let current_ip = computer.get_current_ip();
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// Success condition
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if current_ip == computer_len {
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println!("Result: {}", computer.get_acc());
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break 'outer;
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}
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// Loop detected
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if map.contains_key(¤t_ip) {
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break;
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}
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// Store current ip to keep track of what instructions have been executed
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map.insert(current_ip, true);
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// Run the current instruction
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computer.step();
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}
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// Reset the computer state
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computer.reset();
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}
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// Print the time it took to run the program
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println!("Time: {} micros", start.elapsed().as_micros());
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println!("No result was found");
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}
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