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 A[3];
    int a7,a5;
    a7 = a5 = 0;
    
    for(int i = 0;i < 3 ; i++){
        scanf("%d",&A[i]);
    }
    
    for(int i = 0; i < 3;i++){
        if(A[i] == 5){
            a5++;
        }
        if(A[i] == 7){
            a7++;
        }
    }
    if(a5 == 2 && a7 == 1){
        printf("YES");
    }else{
        printf("NO");
    }
    
    //printf("%d",A);
	return 0;
}