#include <bits/stdc++.h>
using namespace std;
int main() {
  int ax, ay, bx, by;
  scanf("%d%d%d%d", &ax, &ay, &bx, &by);
  if (ax <= bx && ay <= by) {
    printf("Polycarp\n");
    return 0;
  }
  if (ax + ay <= bx + by - min(bx, by)) {
    printf("Polycarp\n");
  } else
    printf("Vasiliy\n");
}
