#include <bits/stdc++.h>
using namespace std;
string P = "Polycarp";
string V = "Vasiliy";
int main() {
  int px, py, vx, vy;
  cin >> px >> py >> vx >> vy;
  if (px == 0 && py == 0) {
    cout << P << endl;
    return 0;
  }
  if (vx == 0 && vy == 0) {
    cout << V << endl;
    return 0;
  }
  if (px <= vx && py <= vy) {
    cout << P << endl;
    return 0;
  }
  if (vx <= px && vy <= py) {
    cout << V << endl;
    return 0;
  }
  int ax, ay, bx, by;
  ax = px;
  ay = py;
  bx = vx;
  by = vy;
  while (true) {
    if (ax > 0) {
      ax--;
    } else {
      ay--;
    }
    if (bx > 0) bx--;
    if (by > 0) by--;
    if (ax == bx && ay == by) {
      cout << P << endl;
      return 0;
    }
    if (ax == 0 && ay == 0) {
      cout << P << endl;
      return 0;
    }
    if (bx == 0 && by == 0) {
      break;
    }
  }
  ax = px;
  ay = py;
  bx = vx;
  by = vy;
  while (true) {
    if (ay > 0) {
      ay--;
    } else {
      ax--;
    }
    if (bx > 0) bx--;
    if (by > 0) by--;
    if (ax == bx && ay == by) {
      cout << P << endl;
      return 0;
    }
    if (ax == 0 && ay == 0) {
      cout << P << endl;
      return 0;
    }
    if (bx == 0 && by == 0) {
      break;
    }
  }
  cout << V << endl;
  return 0;
}
