ABC_123 - A - Five Antennas

#include <bits/stdc++.h>

#define SYNC ios::sync_with_stdio(0);
#define F first
#define S second
#define endl '\n'


using namespace std;

using ll = long long int;
using ii = pair<int, int>;
using vii = vector<ii>;
using vi = vector<int>;
using graph = vector<vi>;
const int INF = 0x3f3f3f3f;
const int MAXN = 58;
const ll mod = 1000000007;



int main() {
    SYNC
    int n[5], k;
    string ans = "Yay!";
    for (auto &i : n) {
        cin >> i;
    }
    cin >> k;
    for (int i = 0; i < 5; i++) {
        for (int j = 0; j < 5; j++) {
            if (i == j) continue;
            if (abs(n[i] - n[j]) > k) {
                ans = ":(";
                break;
            }
        }
    }
    cout << ans << endl;
    return 0;
}