/in/foo.cc: In function 'void jia(int, int)':
/in/foo.cc:16:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(fx!=fy) f[fx]=fy;return ;
  ^~
/in/foo.cc:16:22: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  if(fx!=fy) f[fx]=fy;return ;
                      ^~~~~~