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>

void Check(int n, int *c5, int *c7){
  if(n == 5) (*c5)++;
  if(n == 7) (*c7)++;
}

int main(void){
  int A, B, C, c5, c7;
  scanf("%d %d %d", &A, &B, &C);
  c5 = c7 = 0;
  Check(A, &c5, &c7);
  Check(B, &c5, &c7);
  Check(C, &c5, &c7);
  if(c5 == 2 && c7 == 1) printf("YES\n");
  else printf("NO\n");
  return 0;
}