01-algorithmic_toolbox/02-greedy_algorithms/01-change/change.cpp


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#include <iostream>

int get_change(int n)
{
    int N = 0;

    while(n >= 10) {
        n -= 10;
        N += 1;
    }
    while(n >= 5) {
        n -= 5;
        N += 1;
    }
    while(n >= 1) {
        n -= 1;
        N += 1;
    }

    return N;
}

int main() {
  int n;
  std::cin >> n;
  std::cout << get_change(n) << '\n';
}