diff --git a/day10/src/main.rs b/day10/src/main.rs
index 9668ff3..d4ccc0b 100644
--- a/day10/src/main.rs
+++ b/day10/src/main.rs
@@ -9,45 +9,60 @@ fn main() -> Result<(), Box<dyn error::Error>> {
 	let f = File::open("input.txt")?;
 	let reader = BufReader::new(f);
 
-	let mut strength_sum = 0;
 	let mut strength = 1;
-	let mut cycle = 1;
+	let mut cycle = 0;
+	let mut lines = String::from("");
 	for line in reader.lines() {
 		let line = line?;
 		let mut split_iter = line.split_whitespace();
 		let cmd = split_iter.next().ok_or("asdf")?;
+		if DEBUG {
+			println!("{} {}", cycle, strength);
+		}
 		match cmd {
 			"noop" => {
+				if (strength - 1) <= cycle && (strength + 1) >= cycle {
+					lines += "#";
+				} else {
+					lines += ".";
+				}
 				cycle += 1;
-				if (cycle % 40) == 20 {
-					strength_sum += strength * cycle;
-					if DEBUG {
-						println!("{} {} {}", cycle, strength, strength * cycle)
-					}
+				if (cycle % 40) == 0 {
+					lines += "\n";
+					cycle = 0;
+				}
+				if DEBUG {
+					println!("{} {}", cycle, strength);
 				}
 			},
 			"addx" => {
+				if (strength - 1) <= cycle && (strength + 1) >= cycle {
+					lines += "#";
+				} else {
+					lines += ".";
+				}
 				cycle += 1;
-				if (cycle % 40) == 20 {
-					strength_sum += strength * cycle;
-					if DEBUG {
-						println!("{} {} {}", cycle, strength, strength * cycle)
-					}
+				if (cycle % 40) == 0 {
+					lines += "\n";
+					cycle = 0;
+				}
+				if (strength - 1) <= cycle && (strength + 1) >= cycle {
+					lines += "#";
+				} else {
+					lines += ".";
 				}
 				cycle += 1;
 				let num: i32 = split_iter.next().ok_or("bla")?.parse()?;
-				strength += num;
-				if (cycle % 40) == 20 {
-					strength_sum += strength * cycle;
-					if DEBUG {
-						println!("{} {} {}", cycle, strength, strength * cycle)
-					}
+				if (cycle % 40) == 0 {
+					lines += "\n";
+					cycle = 0;
 				}
+				strength += num;
 			},
 			_ => Err(format!("Unknown command: {}", cmd))?
 		};
 	}
 
-    println!("Signal strength is {}", strength_sum);
+    println!("{lines}");
     Ok(())
 }