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 9.2.1) (judge verdict: Accepted)

#include <stdio.h>

int main (void){
  int a[3];
  int count5 = 0;
  int count7 =0;
  for (int i=0; i<=3; i++){
    scanf("%d",&a[i]);
    if(a[i] == 5) {
      count5++;
    }else if (a[i] == 7){
      count7++;
    }
  }
    if (count5 == 2 && count7 == 1){
      printf("YES");
    }else {
      printf("NO");
    }
    return 0;
 }