#include <bits/stdc++.h>
using namespace std;
int main() {
  int x1, y1, x2, y2;
  while (cin >> x1 >> y1 >> x2 >> y2) {
    int ans = 0;
    if (x1 + y1 <= max(x2, y2)) ans = 1;
    if (x1 <= x2 && y1 <= y2) ans = 1;
    if (ans)
      cout << "Polycarp\n";
    else
      cout << "Vasiliy\n";
  }
  return 0;
}
