CPP0220.cpp

#include <bits/stdc++.h>
#define MAX 10000001
#define ll long long
#define fastsync()                \
    ios_base::sync_with_stdio(0); \
    cin.tie(NULL);                \
    cout.tie(NULL);
const int mod = 1e9 + 7;
using namespace std;

int main() {
    fastsync();
    int t;
    cin >> t;
    while (t--) {
        int n;
        cin >> n;
        int a[n][n];
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                cin >> a[i][j];
            }
        }
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                if (i == 0 || j == 0 || i == n - 1 || j == n - 1)
                    cout << a[i][j] << ' ';
            }
            cout << endl;
        }
    }
    return 0;
}