#include
using namespace std;
int main() {
int num, originalNum, remainder, result = 0;
cin >> num;
originalNum = num;
while (originalNum != 0) {
remainder = originalNum % 10;
result += remainder * remainder * remainder;
originalNum /= 10;
}
if (result == num)
cout <<"true";
else
cout <<"false";
return 0;
}