SXHS

#include<iostream>

using namespace std;

int main()

{

int a;

cin>>a;

int g=a%10;

int s=a/10%10;

int b=a/100;

if(a==b*b*b+s*s*s+g*g*g)

{

cout<<"yes";

}

else

{

cout<<"no";

}

}