/in/foo.cc: In function 'int main()':
/in/foo.cc:11:34: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   11 |                         if (i==1 && j==1 || i==1 && j==n || i==n && j==1 || i==n && j==n)
      |                             ~~~~~^~~~~~~
/in/foo.cc:11:66: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   11 |                         if (i==1 && j==1 || i==1 && j==n || i==n && j==1 || i==n && j==n)
      |                                                             ~~~~~^~~~~~~
/in/foo.cc:11:82: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   11 |                         if (i==1 && j==1 || i==1 && j==n || i==n && j==1 || i==n && j==n)
      |                                                                             ~~~~~^~~~~~~
/in/foo.cc:13:46: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   13 |                         else if (i==1 && j>1 && j<n || i==n && j>1 && j<n)
      |                                  ~~~~~~~~~~~~^~~~~~
/in/foo.cc:15:45: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   15 |                         else if (i>1 && i<n && j==1 || i>1 && i<n && j==n)
      |                                  ~~~~~~~~~~~^~~~~~~