/in/foo.cc: In function 'int main()':
/in/foo.cc:6:19: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]
  memset(ans,0,1005) ;
                   ^
/in/foo.cc:7:20: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]
  memset(ansb,0,1005) ;
                    ^
/in/foo.cc:12:20: warning: unused variable 'lw' [-Wunused-variable]
  int maxk=0,maxl=0,lw,kw;
                    ^~
/in/foo.cc:12:23: warning: unused variable 'kw' [-Wunused-variable]
  int maxk=0,maxl=0,lw,kw;
                       ^~