foo.cc: In function ‘int main()’:
foo.cc:34:26: warning: ‘tmp’ may be used uninitialized [-Wmaybe-uninitialized]
   34 |                 f[tmp][v]=-inf;
      |                 ~~~~~~~~~^~~~~
foo.cc:26:28: note: ‘tmp’ was declared here
   26 |                 int p=-inf,tmp;
      |                            ^~~

正在同步测试数据，请稍后