using System; namespace No222{ public class Program{ public static void Main(string[] args){ var input = Console.ReadLine(); var split = 0; for(var i = 1; i < input.Length; i++){ if(!char.IsDigit(input[i])){ split = i; break; } } var x = int.Parse(input.Substring(0, split)); var op = input[split]; var y = int.Parse(input.Substring(split + 1)); if(op == '+') Console.WriteLine(x - y); if(op == '-') Console.WriteLine(x + y); } } }