#include <bits/stdc++.h>
using namespace std;
int xp, yp, xv, yv;
int func() {
  if (xp < xv || yp < yv) return 10000000;
  return xp - xv + yp - yv;
}
int main() {
  cin >> xp >> yp >> xv >> yv;
  if (xp + yp <= max(xv, yv)) {
    printf("Polycarp\n");
    return 0;
  }
  int now = 0;
  while (xv && yv) {
    xv--;
    yv--;
    now++;
    if (now >= func()) {
      printf("Polycarp\n");
      return 0;
    }
  }
  printf("Vasiliy\n");
  return 0;
}
