CONG HSGTPVinh L9 2019-2020

#define task "CONG"

#include <iostream>
#include <cstdio>
#include <algorithm>

using namespace std;

using ll = long long;
using ld = long double;

constexpr int N = 1e5 + 5;

ll A, B, C, D;

void Read()
{
    cin >> A >> B >> C >> D;
}

void Solve()
{
    ll TUSO = A * D + B * C,
       MAUSO = B * D;

    ll v = __gcd(abs(TUSO), abs(MAUSO));
    TUSO /= v;
    MAUSO /= v;

    cout << TUSO << " " << MAUSO;
}

int32_t main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen(task ".INP", "r"))
    {
        freopen(task ".INP", "r", stdin);
        freopen(task ".OUT", "w", stdout);
    }

    Read();
    Solve();
}