#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define INF 1200000000

using namespace std;

typedef pair<int, int> P;
typedef long long int LL;

int main() {
    string s;
    cin >> s;

    int n3 = 0, n5 = 0;
    for (int i = 0; i < s.size(); i++) {
        n3 += s[i] - '0';
        n3 %= 3;
        if ((s.size() - i - 1) % 2 == 1) n5 += 4 * (s[i] - '0');
        else n5 += s[i] - '0';
        n5 %= 5;
    }

    if (n3 == 0 && n5 == 0) {
        cout << "FizzBuzz" << endl;
    } else if (n3 == 0) {
        cout << "Fizz" << endl;
    } else if (n5 == 0) {
        cout << "Buzz" << endl;
    } else {
        cout << s << endl;
    }

    return 0;
}