#include<iostream>
using namespace std;
int main(){
    int a[10],l;
    cin>>l;
    if(l>0){
        for (int i=0;i<=l-1;i++){
            cin>>a[i];
            cout<<a[i];
        }
    }
    else{
        cout<<"Invalid input";
    }
    for(int i=-1;i>=5)
}