CMMDC Mono

#include <iostream>

using namespace std;

int CMMDC(int a, int b){
 if(!b)
    return a;
 return CMMDC(b, a % b);
}

int main()
{
  int x, y, z, w;
  int a, b, c, d, cmmdc;
  cin >> x >> y >> z >> w;
  a = x * w + y * z;
  b = y * w;
  d = b;
  cmmdc = CMMDC(a, b);
  a /= cmmdc;
  b /= cmmdc;
  c = x * z;
  cmmdc = CMMDC(c, d);
  c /= cmmdc;
  d /= cmmdc;
  cout << a << ' ' << b << ' ' << ' ' << c << ' ' << d;
    return 0;
}