#include<bits/stdc++.h>
using namespace std;

#define FASTio ios::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define ll long long int 
#define all(v) (v).begin(), (v).end()
#define getunique(v) {sort(all(v)); v.erase(unique(all(v)), v.end());}
#define printarr(v) {for(auto x : v) cout<<x<<" ";cout<<"\n";}
#define mp make_pair
#define pb push_back
#define pf push_front
#define ff first
#define ss second
#define lcm(a, b) ((a) * (b)) / __gcd(a, b)
#define umpit unordered_map<ll,ll>::iterator
#define mpit map<ll,ll>::iterator
#define setit set<ll>::iterator
#define mx(a) *max_element(all(a))
#define mn(a) *min_element(all(a))
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
const ll INF = LLONG_MAX / 2;
#define PI 3.1415926535897932384626433832795
#define mod 1000000007


int main()
{
   FASTio;
    ll t=1,i,j;
    //cin>>t;
    while(t--)
    {
        ll n;
        cin>>n;
        ll k = 1.08*n;
        if(k<206)
            cout<<"Yay!\n";
        else if(k == 206)
            cout<<"so-so\n";
        else
            cout<<":(\n";
    }
    return 0;
}
#include <bits/stdc++.h>
using namespace std;

int main() {
  int n; cin >> n;
  cout << ((floor(n*1.08)<206)? "Yay!": ((floor(n*1.08)==206)? "so-so": ":(")) << endl;
}