#include <iostream>
#include <cstring>

using namespace std;

int main()
{
    char s[1001],cuv[1001][1001];
    int v[11] = {};
    int n,k = 0,i,j;
    cin >> n;
    cin.get();
    while(n)
    {
        cin.get(s,1001);
        cin.get();
        k++;
        strcpy(cuv[k],s);
        n--;
    }
    int y = 0;
    int x = 1;
    while(x <= k)
    {
        for(i = 1; i <= k ;i++)
        {
            for(j =5;cuv[i][j] !=' ';j++)
                cout <<cuv[i][j];
        }
        x++;
    }
    return 0;
}