#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	int n;
	cin >> n;
	string s1, s2;
	cin >> s1;
	for(int i = 0; i < n - 1; i++) {
		cin >> s2;
	}
	cout << s2 << "/" << s1 << endl;
}