#include <bits/stdc++.h>
using namespace std;
void win1() {
  cout << "Polycarp";
  exit(0);
}
void win2() {
  cout << "Vasiliy";
  exit(0);
}
int main() {
  int x1, x2, y1, y2;
  cin >> x1 >> y1 >> x2 >> y2;
  if (x1 + y1 <= max(x2, y2)) win1();
  if (x2 <= x1 && y2 <= y1) win2();
  int len1 = max(abs(x2 - x1), y2);
  int len2 = max(abs(y2 - y1), x2);
  if (len1 < y1 || len2 < x1) win2();
  win1();
  return 0;
}
