#include <bits/stdc++.h>

using namespace std;

#define FOR(i, k, n) for(int i = (k); i < (n); i++)
#define DFOR(i, k, n) for(int i = (k); i > (n); i--)
#define SZ(a) int((a).size())
#define FA(i, v) FOR(i, 0, SZ(v))
#define RFA(i, v) DFOR(i, SZ(v), 0)

#define ll long long
#define endl '\n'

#define MAX_INT 2147483647

#define fi first
#define se second

#define fo(x) {freopen(#x".in","r",stdin);freopen(#x".out","w",stdout);}
#define fstd {freopen("input.txt","r",stdin);freopen("output.txt","w",stdout);}

string st = "0123456789";

string toString(int a){
    string out = "";
    while(a){
        out = st[a % 10] + out;
        a /= 10;
    }
    return out;
}

int main()
{
    ifstream inp;
    string p;
    FOR(i, 1, 4){
        inp.open(toString(i) + ".txt");
        inp >> p;
        cout << p << '\n';
        inp.close();
    }
}