#include <stdio.h>

int main(void)
{
	int a,b,c;
	int i;
	
	scanf("%d %d %d",&a,&b,&c);
	
	if(0.0 == (double)(a*a + b*b - c*c)/(2*a*b))
	{
		printf("YES\n");
	}
	else if(0.0 == (double)(b*b + c*c - a*a)/(2*b*c))
	{
		printf("YES\n");
	}
	else if(0.0 == (double)(c*c + a*a - b*b)/(2*c*a))
	{
		printf("YES\n");
	}
	else
	{
		printf("NO\n");
	}
	
	return 0;
}