#include <iostream>
using namespace std;
int ile_pol(int n) {
return n * n;
}
int ile_kolorowych(int n, char kolor) {
if (kolor == 'b')
return n * n / 2;
else
return (n * n - 1) / 2 + 1;
}
int main() {
cout << ile_pol(8) << endl;
cout << ile_pol(13) << endl;
cout << ile_kolorowych(8, 'b') << endl;
cout << ile_kolorowych(7, 'c') << endl;
return 0;
}
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