include <stdio.h>

include <math.h>

int main() {

int n, a, b, c, s = 0;
scanf("%d", &n);
a = n;
c = a % 10;
a /= 10;
b = a % 10;
a /= 10;
s = pow(a, 3) + pow(b, 3) + pow(c, 3);
if (s == n)
	printf("YES");
else
	printf("NO");
return 0;

}