美团笔试

import java.math.BigInteger;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Scanner;
public class Main {
      public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        
        try {
            BigInteger sBigInteger=scanner.nextBigInteger();
            BigInteger sBigInteger2=scanner.nextBigInteger();
            System.out.println(sBigInteger.add(sBigInteger2));
        } catch (Exception e) {
            System.out.println("error");
        }
        }
}