func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, m;   char ch[201][201];   int main() {     cin >> m >> n;     n *= 2;     m *= 2;     for (int i = 1; i <= n; i += 2)       for (int j = 1; j <= m; j += 2) {         cin >> ch[i][j];         ch[i + 1][j] = ch[i][j + 1] = ch[i + 1][j + 1] = ch[i][j];       }     for (int j = 1; j <= m; j++) {       for (int i = 1; i <= n; i++) cout << ch[i][j];       cout << endl;     }     return 0;   }   