#include "testlib.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const ll min_ab = 1;
const ll max_ab = 1'000'000'000'000'000'000;

int main(){
    registerValidation();

    inf.readLong(min_ab, max_ab);
    inf.readSpace();
    inf.readLong(min_ab, max_ab);
    inf.readEoln();

    inf.readEof();
}