#include <iostream>
using namespace std;

int main() {
	int numInput, input;
	if (cin >> numInput && numInput > 0) {
		if (cin >> input) {
			cout << input;
			while (--numInput > 0 && cin >> input) {
				cout << ": " << input;
			}
			cout << endl;
		}
	}
	return 0;
}