#include<bits/stdc++.h>
using namespace std;
#define ll  long long
#define ull unsigned long long
#define lld long double
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define f first
#define s second
#define mk make_pair

/*----------------------DEBUGGER---------------------------*/
#ifndef ONLINE_JUDGE
#define debug(x) cerr << #x <<" "; _print(x); cerr << endl;
#else
#define debug(x)
#endif


void _print(ll t) {cerr << t;}
void _print(int t) {cerr << t;}
void _print(string t) {cerr << t;}
void _print(char t) {cerr << t;}
void _print(lld t) {cerr << t;}
void _print(double t) {cerr << t;}
void _print(ull t) {cerr << t;}

template <class T, class V> void _print(pair <T, V> p);
template <class T> void _print(vector <T> v);
template <class T> void _print(set <T> v);
template <class T, class V> void _print(map <T, V> v);
template <class T> void _print(multiset <T> v);
template <class T, class V> void _print(pair <T, V> p) {cerr << "{"; _print(p.f); cerr << ","; _print(p.s); cerr << "}";}
template <class T> void _print(vector <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T> void _print(set <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T> void _print(multiset <T> v) {cerr << "[ "; for (T i : v) {_print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void _print(map <T, V> v) {cerr << "[ "; for (auto i : v) {_print(i); cerr << " ";} cerr << "]";}
/*----------------------DEBUGGER---------------------------*/

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
#ifndef ONLINE_JUDGE
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
  freopen("error.txt", "w", stderr);
#endif
  int tt = 1;
  //cin >> tt;
  while (tt--)
  {
    int n;
    cin >> n;
    ll ans = 108 * n;
    ans /= 100;
    if (ans < 206)
      cout << "Yay!";
    else if (ans == 206)
      cout << "so-so";
    else
      cout << ":(";
  }//while
}//main
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <math.h>
#include <queue>
#include <numeric>
#include <iomanip>
#include <map>
#include <set>
using namespace std;

using ll = long long;
template <class T> using V = vector<T>;
template <class T> using VV = V<V<T>>;

#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define For(i,a,b) for(ll i=(a);i<(ll)(b);i++)
#define rFor(i,a,b) for(ll i=(a);i>=(ll)(b);i--)
#define co(a) cout<<a<<endl
#define ce(a) cerr<<a<<endl
#define Sort(a) sort((a).begin(),(a).end())
#define Rev(a) reverse((a).begin(),(a).end())
#define Unique(a) (a).erase(unique((a).begin(), (a).end()),(a).end())
#define cfs(a) cout<<fixed<<setprecision(a) 

constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); }

template <class T, class U>
void chmin(T& t, const U& u) {
    if (t > u) t = u;
}
template <class T, class U>
void chmax(T& t, const U& u) {
    if (t < u) t = u;
}

template <class T, class U>
ostream& operator<<(ostream& os, const pair<T, U>& p) {
    os << "(" << p.first << "," << p.second << ")";
    return os;
}
template <class T>
ostream& operator<<(ostream& os, const vector<T>& v) {
    os << "{";
    For(i, 0, v.size()) {
        if (i) os << ",";
        os << v[i];
    }
    os << "}";
    return os;
}

#define LOCAL
#ifdef LOCAL
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << " " << H;
    debug_out(T...);
}
#define debug(...) \
    cerr << __LINE__ << " [" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif

constexpr ll INF = TEN(18);

int main() {
    ll N;
    cin >> N;
    N = N * 1.08 / 1;
    if (206 > N) {
        co("Yay!");
    }
    else if (206 == N) {
        co("so-so");
    }
    else {
        co(":(");
    }
}