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 <math.h>
#include <string.h>

int orde(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[n][l+1];
for (int i = 0; i < n; i++)
    scanf(" %s", s[i]);

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

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

printf("\n");

return 0;
}