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: Accepted)

// 042A
#include <stdio.h>

int main() {
    int a, b, c;
    scanf("%d %d %d", &a, &b, &c);

    int _51 = 0;
    int  _7 = 0;
    int _52 = 0;

    if (a == 5 || b == 5 || c == 5) {
        _51 = 1;
        if (a == 5) {
            a = 0;
        } else if (b == 5) {
            b = 0;
        } else if (c == 5) {
            c = 0;
        }
    }

    if (a == 7 || b == 7 || c == 7) {
        _7 = 1;
        if (a == 7) {
            a = 0;
        } else if (b == 7) {
            b = 0;
        } else if (c == 7) {
            c = 0;
        }
    }

    if (a == 5 || b == 5 || c == 5) {
        _52 = 1;
        if (a == 5) {
            a = 0;
        } else if (b == 5) {
            b = 0;
        } else if (c == 5) {
            c = 0;
        }
    }

    puts( ((_51 == 1) && (_7 == 1) && (_52 == 1) && (a == 0) && (b == 0) && (c == 0)) ? "YES" : "NO");

    return 0;
}