#include<bits/stdc++.h>
using namespace std;
int main(){
  int a;
  cin>>a;
  if (a==191){
    cout<<"so-so";
  }
  else if (a<191){
    cout<<"Yay!";
  }
  else {
    cout<<":(";
  }
}
#include <bits/stdc++.h>
using namespace std;

#define endl ('\n')
#define pi (3.141592653589)
#define mod 1e9 + 7
#define int long long
#define float double
#define test  \
    int t;    \
    cin >> t; \
    while (t--)
#define init(arr, val) memset(arr, val, sizeof(arr))
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define ret return 0;

void solve()
{

    /*Write the Solution Here*/
    int N;
    cin >> N;
    if (floor(1.08 * N) < 206)
        cout << "Yay!" << endl;
    else if (floor(1.08 * N) == 206)
        cout << "so-so" << endl;
    else
        cout << ":(" << endl;
}

int32_t main()
{
    fast
    // test
    solve();
    ret
}