day 10

Cargo.toml

@@ -10,4 +10,5 @@ members = [
     "day7",
     "day8",
     "day9",
+    "day10",
 ]

day10/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "day10"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

day10/input.txt

@@ -0,0 +1,143 @@
+noop
+noop
+addx 5
+noop
+noop
+addx 6
+addx 4
+addx -4
+addx 4
+addx -6
+addx 11
+addx -1
+addx 2
+addx 4
+addx 3
+noop
+addx 2
+addx -30
+addx 2
+addx 33
+noop
+addx -37
+noop
+noop
+noop
+addx 3
+addx 2
+addx 5
+addx 20
+addx 7
+addx -24
+addx 2
+noop
+addx 7
+addx -2
+addx -6
+addx 13
+addx 3
+addx -2
+addx 2
+noop
+addx -5
+addx 10
+addx 5
+addx -39
+addx 1
+addx 5
+noop
+addx 3
+noop
+addx -5
+addx 10
+addx -2
+addx 2
+noop
+noop
+addx 7
+noop
+noop
+noop
+noop
+addx 3
+noop
+addx 3
+addx 2
+addx 8
+addx -1
+addx -20
+addx 21
+addx -38
+addx 5
+addx 2
+noop
+noop
+noop
+addx 8
+noop
+noop
+addx -2
+addx 2
+addx -7
+addx 14
+addx 5
+noop
+noop
+noop
+addx -16
+addx 17
+addx 2
+addx -12
+addx 19
+noop
+noop
+addx -37
+noop
+noop
+noop
+addx 3
+addx 2
+addx 2
+addx 5
+addx 20
+addx -19
+addx 2
+noop
+noop
+noop
+addx 5
+addx 19
+addx -12
+addx 3
+addx -2
+addx 2
+addx -18
+addx 25
+addx -14
+addx -22
+addx 1
+noop
+noop
+noop
+addx 3
+addx 5
+addx -4
+addx 7
+addx 4
+noop
+addx 1
+noop
+noop
+addx 2
+addx -6
+addx 15
+addx -1
+addx 4
+noop
+noop
+addx 1
+addx 4
+addx -33
+noop
+addx 21
+noop

day10/sample_input.txt

@@ -0,0 +1,146 @@
+addx 15
+addx -11
+addx 6
+addx -3
+addx 5
+addx -1
+addx -8
+addx 13
+addx 4
+noop
+addx -1
+addx 5
+addx -1
+addx 5
+addx -1
+addx 5
+addx -1
+addx 5
+addx -1
+addx -35
+addx 1
+addx 24
+addx -19
+addx 1
+addx 16
+addx -11
+noop
+noop
+addx 21
+addx -15
+noop
+noop
+addx -3
+addx 9
+addx 1
+addx -3
+addx 8
+addx 1
+addx 5
+noop
+noop
+noop
+noop
+noop
+addx -36
+noop
+addx 1
+addx 7
+noop
+noop
+noop
+addx 2
+addx 6
+noop
+noop
+noop
+noop
+noop
+addx 1
+noop
+noop
+addx 7
+addx 1
+noop
+addx -13
+addx 13
+addx 7
+noop
+addx 1
+addx -33
+noop
+noop
+noop
+addx 2
+noop
+noop
+noop
+addx 8
+noop
+addx -1
+addx 2
+addx 1
+noop
+addx 17
+addx -9
+addx 1
+addx 1
+addx -3
+addx 11
+noop
+noop
+addx 1
+noop
+addx 1
+noop
+noop
+addx -13
+addx -19
+addx 1
+addx 3
+addx 26
+addx -30
+addx 12
+addx -1
+addx 3
+addx 1
+noop
+noop
+noop
+addx -9
+addx 18
+addx 1
+addx 2
+noop
+noop
+addx 9
+noop
+noop
+noop
+addx -1
+addx 2
+addx -37
+addx 1
+addx 3
+noop
+addx 15
+addx -21
+addx 22
+addx -6
+addx 1
+noop
+addx 2
+addx 1
+noop
+addx -10
+noop
+noop
+addx 20
+addx 1
+addx 2
+addx 2
+addx -6
+addx -11
+noop
+noop
+noop

day10/src/main.rs

@@ -0,0 +1,55 @@
+fn do_cycle(cycle: u64, x_reg: i64) {
+    let col = (cycle - 1) % 40;
+    
+    // println!("{} <= ")
+    if x_reg - 1 <= col.try_into().unwrap() && x_reg + 1 >= col.try_into().unwrap() {
+        print!("#");
+    } else {
+        print!(".");
+    }
+    
+    if col == 39 {
+        println!();
+    }
+}
+
+fn main() {
+    const INPUT: &str = include_str!("../input.txt");
+    const ADD_CYCLES: u64 = 2;
+
+    let mut strengths: Vec<i64> = Vec::new();
+    let mut cycles = 1u64;
+    let mut x_reg = 1i64;
+
+    do_cycle(cycles, x_reg);
+
+
+    for line in INPUT.lines() {
+
+        if line.starts_with("noop") {
+            cycles += 1;
+        } else {
+            let (_, operand) = line.split_once(' ').unwrap();
+            let operand = operand.parse::<i64>().unwrap();
+
+            for _ in 0..(ADD_CYCLES - 1) {
+                cycles += 1;
+                if (cycles + 20) % 40 == 0 {
+                    strengths.push((cycles as i64) * x_reg);
+                }
+                do_cycle(cycles, x_reg);
+            }
+
+            cycles += 1;
+            x_reg += operand;
+        }
+
+        if (cycles + 20) % 40 == 0 {
+            strengths.push((cycles as i64) * x_reg);
+        }
+        do_cycle(cycles, x_reg);
+    }
+
+    let sum: i64 = strengths.iter().sum();
+    println!("{}", sum);
+}