Add 2020 - Day 1 - Part 2

2020/01/main.rs

@@ -6,6 +6,13 @@ mod utils;
 fn main() -> Result<(), Box<dyn Error>> {
 	let lines = utils::parse_input_lines::<u32>()?;
 	
+	part1(&lines);
+	part2(&lines);
+	
+	Ok(())
+}
+
+fn part1(lines: &Vec<u32>) {
 	'outer: for i in 0..lines.len() {
 		let value1 = lines.get(i).unwrap();
 		
@@ -14,10 +21,27 @@ fn main() -> Result<(), Box<dyn Error>> {
 			
 			if value1 + value2 == 2020 {
 				println!("Result: {} x {} = {}", value1, value2, value1 * value2);
-				break 'outer
+				break 'outer;
+			}
+		}
+	}
+}
+
+fn part2(lines: &Vec<u32>) {
+	'outer: for i in 0..lines.len() {
+		let value1 = lines.get(i).unwrap();
+		
+		for j in (i + 1)..lines.len() {
+			let value2 = lines.get(j).unwrap();
+			
+			for k in (j + 1)..lines.len() {
+				let value3 = lines.get(k).unwrap();
+				
+				if value1 + value2 + value3 == 2020 {
+					println!("Result: {} x {} x {} = {}", value1, value2, value3, value1 * value2 * value3);
+					break 'outer;
+				}
 			}
 		}
 	}
-	
-	Ok(())
 }