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: Wrong Answer)

#include<stdio.h>

int main(){
  int a,b,c,sum;
  scanf("%d %d %d",&a,&b,&c);
  sum=a+b+c;
  
  if(sum!=17)
    printf("No");
  else{
    if(a==7 || b==7 || c==7){
      if((a==5 && b==5) || (a==5 && c==5) || (b==5 && c==5)){
        printf("Yes");
      }
      else{
        printf("No");
      }
    }
    else{
      printf("No");
    }
  }
  return 0;
}