foo.cc: In function 'int main()':
foo.cc:36:8: warning: unused variable 'i' [-Wunused-variable]
  int n,i, k=7; cin>>n>>k;
        ^
foo.cc: In function 'void Jeseph(int, int*, int)':
foo.cc:19:11: warning: 'kk' may be used uninitialized in this function [-Wmaybe-uninitialized]
   for(int kk;kk<k;kk++)
           ^~
foo.cc: In function 'int main()':
foo.cc:38:2: warning: 'kk' may be used uninitialized in this function [-Wmaybe-uninitialized]
  for(int kk;kk<k;kk++)
  ^~~

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