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 Input(void);
int Operation(void);

int cnt[10];

int main(void)
{
  Input();
  printf("%s\n", Operation() ? "YES" : "NO");
  
  return 0;
}

void Input(void)
{
  int i, tmp;
  for(i = 1; i <= 3; i++)
  {
    scanf("%d", &tmp);
    cnt[tmp]++;
  }
 }

int Operation(void)
{
  if(cnt[5] == 2 && cnt[7] == 1) return 1;
  return 0;
}