foo.cc: In function ‘int main()’:
foo.cc:10:32: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
   10 |                         if(j==1&&i==1||j==5&&i==5||j==1&&i==5||j==5&&i==1)
      |                            ~~~~^~~~~~
foo.cc:10:56: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
   10 |                         if(j==1&&i==1||j==5&&i==5||j==1&&i==5||j==5&&i==1)
      |                                                    ~~~~^~~~~~
foo.cc:10:68: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
   10 |                         if(j==1&&i==1||j==5&&i==5||j==1&&i==5||j==5&&i==1)
      |                                                                ~~~~^~~~~~
foo.cc:14:37: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
   14 |                         else if(i==2&&j==2||i==2&&j==n-1||i==n-1&&j==2||i==n-1&&j==n-1)
      |                                 ~~~~^~~~~~
foo.cc:14:65: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
   14 |                         else if(i==2&&j==2||i==2&&j==n-1||i==n-1&&j==2||i==n-1&&j==n-1)
      |                                                           ~~~~~~^~~~~~
foo.cc:14:79: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]
   14 |                         else if(i==2&&j==2||i==2&&j==n-1||i==n-1&&j==2||i==n-1&&j==n-1)
      |                                                                         ~~~~~~^~~~~~~~