/*
validation
*/

#include <bits/stdc++.h>

#include "testlib.h"

using ll = long long;

const ll n_min = 1, n_max = 200'000;
const ll val_min = 1, val_max = 1'000'000'000;

int main() {
    registerValidation();
    ll n = inf.readLong(n_min, n_max);
    inf.readSpace();
    inf.readLong(val_min, val_max);
    inf.readEoln();
    for (int i = 0; i < n; i++) {
        inf.readLong(val_min, val_max);
        if (i < n - 1) {
            inf.readSpace();
        } else {
            inf.readEoln();
        }
    }
    inf.readEof();
    return 0;
}