import java.io.*;

// 処理
class Process {
    private PrintWriter printWriter;
    private int L;
    private int M;
    private int N;

    Process(PrintWriter printWriter, int L, int M, int N) {
        this.printWriter = printWriter;
        this.L = L;
        this.M = M;
        this.N = N;
    }

    // 結果を出力
    void printResult() throws IOException {
        int numOf1000YenBills = 0;

        int exchangeCount = 0;

        // 1 円硬貨を 25 円硬貨に両替
        exchangeCount = N / 25;
        N -= 25 * exchangeCount;
        M += exchangeCount;

        // 25 円硬貨を 100 円硬貨に両替
        exchangeCount = M / 4;
        M -= 4 * exchangeCount;
        L += exchangeCount;

        // 100 円硬貨を 1000 円札に両替
        exchangeCount = L / 10;
        L -= 10 * exchangeCount;
        numOf1000YenBills += exchangeCount;

        printWriter.println(L + M + N);
    }
}

public class Main {
    public static void main(String[] args) throws IOException {
        var bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        var printWriter    = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));

        // 入力
        int L = Integer.parseInt(bufferedReader.readLine().trim());

        int M = Integer.parseInt(bufferedReader.readLine().trim());

        int N = Integer.parseInt(bufferedReader.readLine().trim());

        // Process クラスで処理を行う
        var process = new Process(printWriter, L, M, N);
        process.printResult();

        // 各ストリームを閉じる
        // 出力ストリームを閉じるときに標準出力に文字を出力する
        bufferedReader.close();
        printWriter.close();
    }
}