/in/foo.cc: In function 'int main()':
/in/foo.cc:71:63: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   71 |                                 }else if (abs(j-k)==1 || k==1 && j==i || k==i && j==1) // 相邻点
      |                                                          ~~~~~^~~~~~~
/in/foo.cc:71:79: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   71 |                                 }else if (abs(j-k)==1 || k==1 && j==i || k==i && j==1) // 相邻点
      |                                                                          ~~~~~^~~~~~~