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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long
  4.  
  5. int main() {
  6.     int n, m; cin >> n >> m;
  7.  
  8.     bool right = true;
  9.     for (int i = 1; i <= n; i++) {
  10.         if (i % 2 == 1) {
  11.             for (int j = 1; j <= m; j++)
  12.                 cout << '#';
  13.         }else {
  14.             if (right) {
  15.                 for (int j = 1; j <= m-1; j++)
  16.                     cout << '.';
  17.                 cout << '#';
  18.             }else {
  19.                 cout << '#';
  20.                 for (int j = 1; j <= m-1; j++)
  21.                     cout << '.';
  22.             }
  23.             right = !right;
  24.         }
  25.  
  26.         cout << endl;
  27.     }
  28. }
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/WMZ58L
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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