fzu 1909 An Equation(水题）

题目链接：fzu 1909 An Equation

典型的签到题。

 

#include <stdio.h>

#include <string.h>



bool judge(int *a, int sum) {



	for (int i = 0; i < 4; i++) {

		for (int j = i + 1; j < 4; j++)

			if (sum == (a[i] + a[j]) * 2) return true;

	}

	return false;

}



int main () {



	int cas, a[4];



	scanf("%d", &cas);



	for (int i = 1; i <= cas; i++) {

		int sum = 0;

		for (int j = 0; j < 4; j++) {

			scanf("%d", &a[j]);

			sum += a[j];

		}

		printf("Case %d: %s\n", i, judge(a, sum) ? "Yes" : "No");	

	}



	return 0;

}