#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
//#include<cctype>
#include<climits>
#include<iostream>
#include<string>
#include<vector>
#include<map>
//#include<list>
#include<queue>
#include<deque>
#include<algorithm>
//#include<numeric>
#include<utility>
#include<complex>
//#include<memory>
#include<functional>
#include<cassert>
#include<set>
#include<stack>

const int dx[] = {1, 0, -1, 0};
const int dy[] = {0, 1, 0, -1};
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;

const int MAX = 1<<18;
char buf[MAX];

string query(string url) {
    FILE *f = popen(("curl -s -k \"" + url + "\"").c_str(), "r");

    if (f == NULL) {
        assert(false);
    }
    string res;
    while (!feof(f)) {
        if (fgets(buf, MAX, f) == NULL) break;
        res += (string)(buf);
    }
    pclose(f);
    return res;
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    string t = query("http://www.geocities.jp/unko_der/sample_01.txt");
    t[0] = '3';
    string s;
    cin >> s;
    for (int i = 0; i < 200002; i++) {
        if (t[i] != s[i]) {
            cout << s[i] << " " << t[i] << endl;
            break;
        }
    }
    return 0;
}