func_code_string: #include <bits/stdc++.h>   using namespace std;   class TaskA {    public:     void solve(istream& in, ostream& out) {       int n, m;       in >> n >> m;       int cell = m - 1;       for (int i = 0; i < n; ++i) {         if (i & 1) {           for (int j = 0; j < m; ++j) out << (j == cell ?  #  :  . );           cell = (cell == m - 1 ? 0 : m - 1);         } else           for (int j = 0; j < m; ++j) out <<  # ;         out <<   n ;       }     }   };   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     TaskA solver;     std::istream& in(std::cin);     std::ostream& out(std::cout);     solver.solve(in, out);     return 0;   }   