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(){
	int a,b,c,max;
	scanf("%d %d %d",&a,&b,&c);
	if(a>b&&a>c)
		max=a;
	if(b>a&&b>c)
		max=b;
	if(c>a&&c>b)
		max=c;
	if(max==7)
	{
		if(a*b*c==175&&a+b+c==17)
			printf("YES\n");
		else
			printf("NO\n");
	}
	else
		printf("NO\n");
	}