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: Wrong Answer)

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int cmpstr(const void * a, const void * b){
    const char *x = a, *y = b;
    return strcmp(x,y);
}

int main(){
    int n, l;
    scanf("%d%d", &n, &l);
    char s[100][101];

    //printf("%p %p\n", s, s[1]);

    scanf("%*c");
    for (int i = 0; i < n; ++i){
        scanf("%[^\n]", s[i]);
        scanf("%*c");
    }

    qsort(s, n, sizeof(s[0]), cmpstr);

    for (int i = 0; i < n; ++i){
        printf("%s", s[i]);
    }
    printf("\n");



    return 0;
}