05.Coins C++

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

using namespace std;

int main()
{
    double balance;

    cin >> balance;

    balance *= 100;

    int counter = 0;

    while ( (int)balance != 0)
    {
        if (balance >= 200)
        {
            balance -= 200;
        }
        else if (balance >= 100)
        {
            balance -= 100;
        }
        else if (balance >= 50)
        {
            balance -= 50;
        }
        else if (balance >= 20)
        {
            balance -= 20;
        }
        else if (balance >= 10)
        {
            balance -= 10;
        }
        else if (balance >= 5)
        {
            balance -= 5;
        }
        else if (balance >= 2)
        {
            balance -= 2;
        }
        else if (balance >= 1)
        {
            balance -= 1;
        }
        counter++;
    }

    cout << counter << endl;
    return 0;
}