#include <bits/stdc++.h>
using namespace std;
int main() {
  int x1, y1, x2, y2;
  scanf("%d%d%d%d", &x1, &y1, &x2, &y2);
  int flag = 0;
  int s1 = x1 + y1;
  int s2 = max(x2, y2);
  if (s1 <= s2) flag = 1;
  if (x1 >= 0 && x1 <= x2 && y1 >= 0 && y1 <= y2) flag = 1;
  if (flag)
    printf("Polycarp\n");
  else
    printf("Vasiliy\n");
}
