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;
	int i = 0;
	scanf("%d %d %d",&a ,&b ,&c);
	
	if(a+b+c != 17)
	{
		printf("NO");
	}
	else 
	{
		if(a != 5)
		{
			if(a != 7)
			{
				printf("NO");
				return 0;
			}
		}
		else
		{
			if(b != 5)
			{
				if(b != 7)
				{
					printf("NO");
					return 0;
				}
			}
			else 
			{
				if(c != 5)
				{
					if(c != 7)
					{
						printf("NO");
						return 0;
					}
					
				}
			}
		
		}
	printf("YES");
	return  0;
	}
}