foo.cc: In function 'int main()':
foo.cc:46:33: warning: 'sty' may be used uninitialized [-Wmaybe-uninitialized]
   46 |                         int stx,sty;
      |                                 ^~~
foo.cc:46:29: warning: 'stx' may be used uninitialized [-Wmaybe-uninitialized]
   46 |                         int stx,sty;
      |                             ^~~

正在同步测试数据，请稍后
[Hydro](https://hydro.ac)提供评测服务