#include <bits/stdc++.h>
using namespace std;
int main() {
  long long px, py, vx, vy;
  cin >> px >> py >> vx >> vy;
  if (px >= vx && py >= vy) {
    cout << "Vasiliy" << endl;
    return 0;
  }
  if (py > vy - vx + px) {
    long long mx, my;
    mx = px;
    my = max(0ll, vy - vx + px);
    long long tim = py - my;
    vx = vx - tim;
    if (vx < mx)
      cout << "Vasiliy" << endl;
    else
      cout << "Polycarp" << endl;
  } else if (py < vy - vx + px) {
    long long mx, my;
    my = py;
    mx = max(0ll, py - vy + vx);
    long long tim = px - mx;
    vy = vy - tim;
    if (vy < my)
      cout << "Vasiliy" << endl;
    else
      cout << "Polycarp" << endl;
  } else if (py == vy - vx + px) {
    cout << "Polycarp" << endl;
  }
}
