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

int main() {
    vector<char> v;
    int N;
    cin >> N;
    for (auto iter = 0; iter != N; ++iter) {
        cin >> v[iter];
    }
    for (auto i = 1; i != N - 1; ++i) {
        cout << v[i];
    }
    cout << "\n";
}