func_code_string: #include <bits/stdc++.h>   using namespace std;   char a[105][105];   int main() {     ios::sync_with_stdio(false);     int n, m;     cin >> n >> m;     for (int i = 1; i <= m; i++)       for (int j = 1; j <= n; j++) cin >> a[i][j];     for (int i = 1; i <= n; i++) {       for (int j = 1; j <= m; j++) cout << a[j][i] << a[j][i];       cout << endl;       for (int j = 1; j <= m; j++) cout << a[j][i] << a[j][i];       cout << endl;     }     return 0;   }   