#include <bits/stdc++.h>
#define fli(i,fc,n) for(int i=fc;i<n;i++)
#define rli(i,n,rc) for(int i=n;i>rc;i--)
#define sz(a) a.size()
#define ll long long
#define pb push_back
#define vi vector<int>
#define vll vector<ll>
#define pi vector<pair<int,int>>
#define pll vector<pair<ll,ll>>
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define nl "\n"
using namespace std;

#ifndef ONLINE_JUDGE
#include "algo/debug.h"
#else
#define debug(...) 42
#endif


void saad(){
    int n; cin >> n;
    cout << n*n << nl;
}

int main() {
    ios::sync_with_stdio(false),cin.tie(nullptr);
    int t = 1;
    while(t--){
        saad();
    }
}