#include <bits/stdc++.h>
using namespace std;
const int N = 252;
int dis(int x1, int y1, int x2, int y2) { return abs(x1 - x2) + abs(y1 - y2); }
bool Gao(int x1, int y1, int x2, int y2) {
  if (dis(0, 0, x1, y1) <= max(x2, y2)) return true;
  for (int i = 1; i <= min(x2, y2); ++i) {
    if (dis(x2 - i, y2 - i, x1, y1) <= i) return true;
  }
  return false;
}
int main() {
  int x1, x2, y1, y2;
  while (cin >> x1 >> y1 >> x2 >> y2) {
    if (Gao(x1, y1, x2, y2))
      cout << "Polycarp" << endl;
    else
      cout << "Vasiliy" << endl;
  }
  return 0;
}
