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>
#include <stdlib.h>

int main()
{
  int a[3];
  int ret;
  int i,j;
  int tmp;
  
  ret=scanf("%d%d%d", &a[0], &a[1], &a[2]);
  for (i=0; i<2; ++i){
    for (j=2; j>i; --j){
      if (a[j-1]>a[j]){
        tmp=a[j];
        a[j]=a[j-1];
        a[j-1]=tmp;
      }
    }
  }
  if ((a[0]==5 && a[1]==5)&&(a[2]==7)){
    printf("YES\n");
  } else {
    printf("NO\n");
  }

  return 0;
}