题解 | #高精度整数加法#

import java.util.*;
import java.math.*;
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        BigDecimal a = in.nextBigDecimal();
        BigDecimal b = in.nextBigDecimal();
        System.out.println(a.add(b));
    }
}