#include<bits/stdc++.h>
#define int long long
int read(){
	char c=getchar();while (c!='-'&&(c<'0'||c>'9'))c=getchar();
	int k=1,kk=0;if (c=='-')c=getchar(),k=-1;
	while (c>='0'&&c<='9')kk=kk*10+c-'0',c=getchar();return kk*k;
}using namespace std;
signed main(){
	int n=read();cout<<n*n*n<<endl;
}