02. Sum Big Numbers

import java.math.BigInteger;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        BigInteger firstNumber = new BigInteger(scan.nextLine());
        BigInteger secondNumber = new BigInteger(scan.nextLine());

        BigInteger sum = firstNumber.add(secondNumber);
        System.out.println(sum);
    }
}