import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UncheckedIOException;
import java.nio.charset.Charset;
import java.util.StringTokenizer;
import java.io.Writer;
import java.io.OutputStreamWriter;
import java.io.BufferedReader;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author mikit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        LightScanner in = new LightScanner(inputStream);
        LightWriter out = new LightWriter(outputStream);
        yukicoder solver = new yukicoder();
        solver.solve(1, in, out);
        out.close();
    }

    static class yukicoder {
        public void solve(int testNumber, LightScanner in, LightWriter out) {
            String[] input = new String[500001];
            int n = 0;
            try {
                while (true) {
                    input[n] = in.string();
                    n++;
                }
            } catch (RuntimeException ex) {
            }
            if (n == 0) {
                out.ansln("Hello World!");
            } else if (n == 3) {
                out.ansln((Integer.parseInt(input[0]) + Integer.parseInt(input[1])) + " " + input[2]);
            } else {
                long[] a = new long[n];
                for (int i = 0; i < n; i++) {
                    a[i] = Long.parseLong(input[i]);
                }
                if (n == 1) {
                    if (Math.random() < 0.5) {
                        out.ansln((a[0] + 1) * a[0] / 2);
                    } else {
                        for (int i = 1; i <= a[0]; i++) {
                            if (i % 3 == 0) {
                                out.print("Fizz");
                            }
                            if (i % 5 == 0) {
                                out.print("Buzz");
                            } else if (i % 3 > 0) {
                                out.ans(i);
                            }
                        }
                        out.ln();
                    }
                } else {
                    long ans = 0;
                    for (int i = 1; i < n; i++) {
                        ans += a[i];
                    }
                    out.ansln(ans);
                }
            }
        }

    }

    static class LightWriter implements AutoCloseable {
        private final Writer out;
        private boolean autoflush = false;
        private boolean breaked = true;

        public LightWriter(Writer out) {
            this.out = out;
        }

        public LightWriter(OutputStream out) {
            this(new BufferedWriter(new OutputStreamWriter(out, Charset.defaultCharset())));
        }

        public LightWriter print(char c) {
            try {
                out.write(c);
                breaked = false;
            } catch (IOException ex) {
                throw new UncheckedIOException(ex);
            }
            return this;
        }

        public LightWriter print(String s) {
            try {
                out.write(s, 0, s.length());
                breaked = false;
            } catch (IOException ex) {
                throw new UncheckedIOException(ex);
            }
            return this;
        }

        public LightWriter ans(String s) {
            if (!breaked) {
                print(' ');
            }
            return print(s);
        }

        public LightWriter ans(long l) {
            return ans(Long.toString(l));
        }

        public LightWriter ans(int i) {
            return ans(Integer.toString(i));
        }

        public LightWriter ansln(long... n) {
            for (long n1 : n) {
                ans(n1).ln();
            }
            return this;
        }

        public LightWriter ansln(String... n) {
            for (String n1 : n) {
                ans(n1).ln();
            }
            return this;
        }

        public LightWriter ln() {
            print(System.lineSeparator());
            breaked = true;
            if (autoflush) {
                try {
                    out.flush();
                } catch (IOException ex) {
                    throw new UncheckedIOException(ex);
                }
            }
            return this;
        }

        public void close() {
            try {
                out.close();
            } catch (IOException ex) {
                throw new UncheckedIOException(ex);
            }
        }

    }

    static class LightScanner {
        private BufferedReader reader = null;
        private StringTokenizer tokenizer = null;

        public LightScanner(InputStream in) {
            reader = new BufferedReader(new InputStreamReader(in));
        }

        public String string() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new UncheckedIOException(e);
                }
            }
            return tokenizer.nextToken();
        }

    }
}