foo.cc: In function 'int main()':
foo.cc:16:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=0;i<m;i++)
     ^~~
foo.cc:18:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  n=n-1;
  ^
foo.cc:23:11: warning: 'two' may be used uninitialized in this function [-Wmaybe-uninitialized]
      hanoi(m-1,one,three,two);
      ~~~~~^~~~~~~~~~~~~~~~~~~
foo.cc:23:11: warning: 'three' may be used uninitialized in this function [-Wmaybe-uninitialized]
foo.cc:23:11: warning: 'one' may be used uninitialized in this function [-Wmaybe-uninitialized]

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