import java.util.*;

public class fichas {
    public static void main( String[] args ){
        Scanner s = new Scanner(System.in);
        int n = s.nextInt(); s.close();

        int f[] = { 1, 2, 5, 10 };
        int ans = 0;

        for( int i = 3; i >= 0; i-- ){
            ans += n/f[i]; 
            n %= f[i];
        }

        System.out.println(ans);
    }
}