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 main(void){
    int f1=0,s1=0,a,b,c;
    scanf("%d %d %d",&a,&b,&c);
    if(a % 5 == 0)
        f1++;
    if(a % 7 == 0)
        s1++;
    if(b % 5 == 0)
        f1++;
    if(b % 7 == 0)
        s1++;
    if(c % 5 == 0)
        f1++;
    if(c % 7 == 0)
        s1++;
    if(f1 == 2 && s1 == 1)
        puts("YES");
    else
        puts("NO");

    return 0;
}