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<string.h>
int main()
{
  int A,B,C;
  int con5=0,con7=0,con=0;
  
  scanf("%d %d %d",&A,&B,&C);
  
  if(A==5) con5++;
  else if(A==7) con7++;
  else con++;
  if(B==5) con5++;
  else if(B==7) con7++;
  else con++;
  if(C==5) con5++;
  else if(C==7) con7++;
  else con++;
  
  if(con==0&&con5==2&&con7==1)
    printf("YES");
  else printf("NO");
  
  return 0;
}