1 import java.io.*; 2 import java.util.*; 3 import java.math.BigInteger; 4 import java.util.Scanner; 5 public class Main 6 { 7     public static void main(String args[]) throws Exception 8     { 9         Scanner in = new Scanner(System.in);10         while(in.hasNext())11         {12             BigInteger a, b;13             a = in.nextBigInteger();14             b = in.nextBigInteger();15             System.out.println(a.add(b));16         }17     }18 }