cheap travel code example

Example: A. Cheap Travel

#include <iostream>#include <math.h> using namespace std; int main(){    int n, m, a, b;        cin >> n >> m >> a >> b;    if (m * a <= b)        cout << n * a << "\n";    else         cout << (n/m) * b + min((n%m) * a, b) << "\n";     return 0;}