include

using namespace std;

int main() {
int number;

cout << "Введите число от 1 до 100: ";
cin >> number;
if (number % 10 == 1 && number != 11) {
cout << number << " рубль" << endl;
} else if ((number % 10 == 2 || number % 10 == 3 || number % 10 == 4) && number / 10 != 1 ) {
cout << number << " рубля" << endl;
} else {
cout << number << " рублей" << endl;
}
return 0;

}