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>
int count_5=0,count_7=0;
void check(int word);
int main(void)
{
  int word[4],i;
  char str[16];
  fgets(str,sizeof(str),stdin);
  sscanf(str,"%d%d%d",&word[0],&word[1],&word[2]);
  for (i=0;i<3;i++)
  {
    check(word[i]);
  }
  if((count_5 == 2)&&(count_7 == 1))
  {
    puts("YES");
  }
  else
  {
    puts("NO");
  }
  return 0;
}

void check(int word)
{
  switch (word)
  {
    case 5:
      count_5++;
      break;
    case 7:
      count_7++;
      break;
    default:
      break;
  }
}