Java大数简单题---Yet another A + B

news/2025/2/25 15:52:16

PracticeGym 100735I

Description
Statements

You are given three numbers. Is there a way to replace variables A, B and C with these numbers so the equality A + B = C is correct?

Input

There are three numbers X1, X2 and X3 (1 ≤ Xi ≤ 10100), each on a separate line of input.

Output

Output either “YES”, if there is a way to substitute variables A, B and C with given numbers so the equality is correct, or “NO” otherwise.

Sample Input
Input
1
2
3
Output
YES
Input
1
2
4
Output
YES
Input
1
3
5
Output
NO

可以用高精度加法，也可以用Java大数直接做；

给出Java 的代码：

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

public class Main {

    public static void main(String[] args) {
        BigInteger a,b,c;
        Scanner in = new Scanner(System.in);
        a = in.nextBigInteger();
        b = in.nextBigInteger();
        c = in.nextBigInteger(); 
        if(a.add(b).equals(c))
        {   
            System.out.println("YES");
            System.exit(0);
        }
        if(a.add(c).equals(b))
        {   
            System.out.println("YES");
            System.exit(0);
        }
        if(b.add(c).equals(a))
        {   
            System.out.println("YES");
            System.exit(0);
        }
        if(a.add(a).equals(b))
        {
            System.out.println("YES");
            System.exit(0);
        }
        if(a.add(a).equals(c))
        {
            System.out.println("YES");
            System.exit(0);
        }
        if(b.add(b).equals(a))
        {
            System.out.println("YES");
            System.exit(0);
        }
        if(b.add(b).equals(c))
        {
            System.out.println("YES");
            System.exit(0);
        }
        if(c.add(c).equals(a))
        {
            System.out.println("YES");
            System.exit(0);
        }
        if(c.add(c).equals(b))
        {
            System.out.println("YES");
            System.exit(0);
        }
        System.out.println("NO");
    }
}