Problem:
Score : 100 points

Problem Statement

Iroha loves Haiku. Haiku is a short form of Japanese poetry. A Haiku consists of three phrases with 5, 7 and 5 syllables, in this order.

To create a Haiku, Iroha has come up with three different phrases. These phrases have A, B and C syllables, respectively. Determine whether she can construct a Haiku by using each of the phrases once, in some order.

Constraints

1≦A,B,C≦10

Input

The input is given from Standard Input in the following format:

A B C

Output

If it is possible to construct a Haiku by using each of the phrases once, print YES (case-sensitive). Otherwise, print NO.

Sample Input 1

5 5 7

Sample Output 1

YES

Using three phrases of length 5, 5 and 7, it is possible to construct a Haiku.

Sample Input 2

7 7 5

Sample Output 2

NO

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
#define MAX (3)
int main(void) {                    /*3回スキャンして、5が2つ、7が1つの時YES*/
    int array[2];
    int i;
    int a = 0;
    int b = 0;

    for (i = 0; i < MAX; i++) {     /*MAX=3*/
        scanf("%d", &array[i]);     /*配列の時はアンパサンドを付ける*/

        switch (array[i]) {
        case 5:
            a++;
            break;
        case 7:
            b++;
            break;
        default:
            break;
        }
    }

    if ((a == 2) && (b == 1)) {
        printf("YES\n");
    }
    else {
        printf("NO\n");
    }
}