#include <iostream>
#include <string>
#include <math.h>

using namespace std;

int main()
{
    double change;
    int coins = 0;
    cin >> change;
    while (change > 0.00)
    {
        if (change >= 2)
        {
            change -= 2.00;
            coins++;
        }
        else if (change >= 1)
        {
            change -= 1.00;
            coins++;
        }
        else if (change >= 0.50)
        {
            change -= 0.50;
            coins++;
        }
        else if (change >= 0.20)
        {
            change -= 0.20;
            coins++;
        }
        else if (change >= 0.10)
        {
            change -= 0.10;
            coins++;
        }
        else if (change >= 0.05)
        {
            change -= 0.05;
            coins++;
        }
        else if (change >= 0.02)
        {
            change -= 0.02;
            coins++;
        }
        else if (change >= 0.01)
        {
            change -= 0.01;
            coins++;
        }
    }
    cout << coins;

    return 0;
}