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