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)

// A - 和風いろはちゃんイージー / Iroha and Haiku (ABC Edition)

#include <stdio.h>

int main(void) {
  int n[3], n5 = 0, n7 = 0;
  scanf("%d %d %d", &n[0], &n[1], &n[2]);
  for (int i = 0; i < 3; i++) {
    if (n[i] == 5) {
      n5++;
    } else if (n[i] == 7) {
      n7++;
    }
  }
  if((n5 == 2) && (n7 == 1)){
    printf("YES\n");
  }else{
    printf("NO\n");
  }
  //printf("%d %d ",n5,n7);
  return 0;
}