#include <bits/stdc++.h>
using namespace std;
const int Maxn = 4e5 + 7;
const int inf = 1e9 + 7;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int x1, y1, x2, y2;
  cin >> x1 >> y1 >> x2 >> y2;
  int m = 0;
  if (x1 + y1 <= max(x2, y2)) {
    cout << "Polycarp";
    return 0;
  }
  while (x2 >= 0 && y2 >= 0) {
    if (x1 >= x2 && y1 >= y2) {
      if (x1 + y1 - x2 - y2 <= m) {
        cout << "Polycarp";
        return 0;
      }
    }
    m++, x2--, y2--;
  }
  cout << "Vasiliy";
}
