#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;

int main(){
    int n;
    cin >> n;
    cout.fill('0');
    cout << setw(3) << n << endl;

/*
    //default
    cout << n << endl;

    // width 5
    cout.width(5);
    cout << n << endl;

    // width will be influenced only once
    cout << n << endl;

    //save default fill character and set fill character
    char prevFill = cout.fill('0');
    // 0 fill
    cout << n << endl;
    // width 10
    cout << setw(10) << n << endl;
    
    // remain setfill character
    cout << setw(5) << n << endl;

    // recover prevFill
    cout.fill(prevFill);
    cout << setw(5) << n << endl;
    */
}