#include <iostream>
 
using namespace std;

int main() {
	int humanYears {0};

	cout<< "How old are you?";
	cin >> humanYears;
	if (!cin){
		cerr<< "Sorry, your attempt at input failed.\n";
		return EXIT_FAILURE;
	}


	const int dogYears{humanYears * 7};

	cout<< "That is" << dogYears << "dog years\n";

	return EXIT_SUCCESS;

}