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>

int main(void){
    int n[3];
    int i;
    int cnt_go = 0;
    int cnt_shichi = 0;

    scanf("%d %d %d", &n[0], &n[1], &n[2]);

    for(i = 0; i < 3; i++){
        if(n[i] == 5){
            cnt_go++;
        }
        if(n[i] == 7){
            cnt_shichi++;
        }
    }

    if(cnt_go == 2 && cnt_shichi == 1){
        puts("YES");
    }
    else{
        puts("NO");
    }


    return 0;
}