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 (Clang 3.8.0) (judge verdict: Wrong Answer)

#include <stdio.h>
#define SIZE 3

int main(void)
{
    int five = 0;
    int seven = 0;
    int num[3];

    //input
    scanf("%d %d %d", &num[0], &num[1], &num[2]);
    for (int i = 1; i < 3; i++){
        if (num[i] == 5)
        five ++;
        else if(num[i] == 7)
        seven ++;
    }

    //output
    if(five == 2 && seven == 1)
        printf("YES");
    else
        printf("NO");

    return 0;
}