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