/in/foo.cc: In function 'int main()':
/in/foo.cc:31:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   31 |     for(int i=1;i<=n;i++)
      |     ^~~
/in/foo.cc:33:56: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   33 |        cout<<ant[pos[i]].x<<' '<<ant[pos[i]].dir<<endl;也可以
      |                                                        ^~~~~~
/in/foo.cc:33:56: error: '\U00004e5f\U000053ef\U00004ee5' was not declared in this scope