//



#include <iostream>


using namespace std;


int main() {
  short N; cin >> N;

  short ans = 1.08f * N;

  if (ans < 206)
    cout << "Yay!\n";
  else if (ans == 206)
    cout << "so-so\n";
  else
    cout << ":(\n";

  return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main(){
  int a;
  cin>>a;
  cout<<(a+99)/100;
  return 0;
}
