foo.cc: In function 'int main()':
foo.cc:47:2: error: expected ';' before 'for'
  for(int i=1;i<=cnt;i++)
  ^~~
foo.cc:46:5: warning: statement has no effect [-Wunused-value]
  q[h]
  ~~~^
foo.cc:47:14: error: 'i' was not declared in this scope
  for(int i=1;i<=cnt;i++)
              ^
foo.cc:45:11: warning: unused variable 't' [-Wunused-variable]
  int h=0, t=1;
           ^

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。