JAVA 高精度加法

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

public class Main {
    public static void main(String[] args) {
        Scanner sca = new Scanner(System.in);
            BigInteger a,b;
            a = sca.nextBigInteger();
            b = sca.nextBigInteger();
            BigInteger c = a.add(b);
            System.out.println(c);

    }
}

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