java bigintger

Main.java

import java.util.*;
import java.math.*;

public class Main {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        BigInteger a = sc.nextBigInteger();
        BigInteger b = sc.nextBigInteger();
        BigInteger sum = a.add(b);
        System.out.println(sum.toString());
    }
}