Compilare: user.cpp: In function ‘int main()’: user.cpp:49:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] j-=si[d[i][j]]; ^ user.cpp:54:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<ans.size();++i) cout<<ans[i]<<' '; ^ user.cpp:16:10: warning: unused variable ‘A’ [-Wunused-variable] int *A,*B; ^ user.cpp:16:13: warning: unused variable ‘B’ [-Wunused-variable] int *A,*B; ^