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;
}
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;
}
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