#include <bits/stdc++.h>
using namespace std;
int main() {
  int x1, y1, x2, y2;
  cin >> x1 >> y1 >> x2 >> y2;
  bool f = 0;
  if (x1 + y1 <= max(x2, y2)) f = 1;
  for (int i = 0; i < min(x2, y2); i++) {
    int nx = x2 - i;
    int ny = y2 - i;
    if (abs(nx - x1) + abs(ny - y1) <= i) f = 1;
  }
  cout << (f ? "Polycarp" : "Vasiliy");
  return 0;
}
