题解 | A-B≠C

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        double a = in.nextDouble();
        double b = in.nextDouble();
        double c = in.nextDouble();
        if (Math.abs(a - b - c) < 1e-8) System.out.print("YES");
        else System.out.print("NO");
    }
}

把判断条件改为与c的差值的绝对值是否小于10^-6