static Object PartA() { List <int> input = ReadInputs.ReadInts(inputPath); int ans = 0; Console.WriteLine("Part A: Result is {0}", ans); return(ans); }
static Object PartA() { List <int> input = ReadInputs.ReadInts(inputPath); input.Sort(); int ans = 0; foreach (int a in input) { int b = 2020 - a; if (input.Contains(b)) { ans = a * b; break; } } Console.WriteLine("Part A: Result is {0}", ans); return(ans); }