#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i=0;i<n;i++)
#define all(x) (x).begin(),(x).end()
using ll=long long;
const int inf=(1<<30)-1;
const long long INF = 1000000000000000000;
template<class T>bool chmax(T&a,const T&b){if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T&a,const T&b){if(b<a){a=b;return 1;}return 0;}


int main(){
    int N;
    string S;
    cin>>N>>S;
    for(int i=1;i<=N-2;i++)cout<<S[i];
    
    
}