#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pdd pair<ld, ld>
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second

const int NMAX = 1000005;

char x[NMAX], sol[NMAX];

int main() {
    cin.sync_with_stdio(false);

    int n = 0;
    while (1) {
        fgets(x, NMAX, stdin);
        int mlc = strlen(x);
        if (mlc == 1)
            break;

        for (int i = 0; i < mlc - 1; i++)
            sol[n++] = x[i];
    }

    printf("%s\n", sol);

    return 0;
}