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