#include <bits/stdc++.h>
constexpr int INF = 2147483647;
constexpr long long int INF_LL = 9223372036854775807;
constexpr int MOD = 1000000007;
using namespace std;
typedef long long int ll;
typedef unsigned long long int ull;

random_device rnd;

int main(int argc, char* argv[]) {
	string a;
	cin >> a;
	int N;
	try {
		N = stoi(a);
	}
	catch (invalid_argument & e) { //aが文字列だった
		cout << "Hello World!" << endl;
		return 0;
	}
	vector<string> b(N);
	if (cin.eof()) { //FizzBuzz or sum
		if (rnd() % 2) { //sum
			cout << N * (N + 1) / 2 << endl;
			return 0;
		}
		else {
			for (int i = 0; i < N; i++) { //fizzbuzz
				if (i % 3 == 0 && i % 5 == 0) {
					cout << "FizzBuzz" << endl;
				}
				else if (i % 3 == 0) {
					cout << "Fizz" << endl;
				}
				else if (i % 5 == 0) {
					cout << "Buzz" << endl;
				}
				else {
					cout << i << endl;
				}
			}
			return 0;
		}
	}
	for (int i = 0; i < N; i++) {
		if (i == 2 && cin.eof()) { //No9001
			try {
				cout << N + stoi(b[0]) << " " << b[1] << endl;
				return 0;
			}
			catch(...){}
		}
		cin >> b[i];
	}
	int ans = 0;
	for (int i = 0; i < N; i++) {
		try {
			ans += stoi(b[i]);
		}
		catch(...){}
	}
	cout << ans << endl;
}