#include <bits/stdc++.h>
using namespace std;
template <class T>
inline void mini(T &a, T b) {
  if (b < a) a = b;
}
template <class T>
inline void maxi(T &a, T b) {
  if (b > a) a = b;
}
int a, b, c, d;
bool ok() { return a + b <= max(c, d) || (a <= c && b <= d); }
int main() {
  cin >> a >> b >> c >> d;
  puts(ok() ? "Polycarp" : "Vasiliy");
}
