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(){
  int unused __attribute__((unused));
  int A[3], cnt5 = 0, cnt7 = 0, i;

  unused = scanf("%d %d %d", &A[0], &A[1], &A[2]);

  for(i=0; i<3; i++){
    if(A[i]==5) cnt5++;
    else if(A[i]==7) cnt7++;
  }
  if(cnt5==2 && cnt7==1) printf("YES");
  else printf("NO");
  return 0;
}