#include "bits/stdc++.h"

#define int long long

using namespace std;
using ll = long long;
using P = pair<ll, ll>;
const ll INF = (1LL << 61);
ll mod = 1000000007;

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	string S; cin >> S;
	int N = S.size();
	if (N == 1)cout << "00" << S << endl;
	else if (N == 2)cout << "0" << S << endl;
	else cout << S << endl;
	return 0;
}