#include <bits/stdc++.h>
using namespace std;
int main() {
  int x1, y1, x2, y2;
  cin >> x1 >> y1 >> x2 >> y2;
  if (x1 + y1 <= x2 + y2 - min(x2, y2))
    cout << "Polycarp" << endl;
  else if (x1 + y1 > x2 + y2)
    cout << "Vasiliy" << endl;
  else {
    int d1 = x1 - y1;
    int d2 = x2 - y2;
    int dif = d1 - d2;
    if (dif < 0) dif *= -1;
    if (x1 + y1 <= x2 + y2 - min(min(x2, y2), max(0, dif - 1)))
      cout << "Polycarp" << endl;
    else
      cout << "Vasiliy" << endl;
  }
}
