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(void){
  int *iroha = calloc(3, sizeof(int));
  scanf("%d%d%d",iroha,iroha+1,iroha+2);
  int count[2]={0,0};
  for(int i = 0; i < 3; i++){
    if( iroha[i] == 5 )count[0] += 1;
    else if( iroha[i] == 7)count[1] += 1;
  }
  
  if( count[0] == 2 && count[1] == 1)printf("YES\n");
  else printf("NO\n");
  free(iroha);
  return 0;
}