#include <bits/stdc++.h>
using namespace std;
#define int long long
using vec_int = vector<int>;
using vec_ii = vector<vec_int>;
using vec_iii = vector<vec_ii>;
using vec_iiii = vector<vec_iii>;
using P = pair<int,int>;
using T = tuple<int,int,int>;
using ll = long long;
using ld = long double;
#define rep(i, n) for(int i = 0; i < (int)(n); i++)

void cout_line(vector<int> &a){
    for(int i=0;i<a.size();i++){
        if(i<a.size()-1){
            cout<<a.at(i)<<" ";
        }else{
            cout<<a.at(i)<<endl;
        }
    }
}

int charToInt(char c){
    char zero_num = '0';
    return (int)c - (int)zero_num;
}

signed main(){
    ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int N; cin>>N;

    string N2 = to_string(N);
    while(N2.size()<3){
        N2 = '0'+N2;
    }
    cout<<N2<<endl;


    return 0;
}