//acmp.ru 0008

#include <stdio.h>

int main(){
	freopen("INPUT.TXT", "r", stdin);
	freopen("OUTPUT.TXT", "w", stdout);
	int a, b, c;

	scanf("%i %i %i", &a, &b, &c);
	if (a * b == c){
		printf("%s", "YES");
	}else {
		printf("%s", "NO");
	}
}