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