Compilare: user.cpp: In function ‘int main()’: user.cpp:29:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[i]=max(dp[i], dp[l[last[i]]]+1); ^ user.cpp:30:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[i]>1) N[i]=l[last[i]]; ^ user.cpp:31:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[i]>dp[l[first[i]]]) l[first[i]]=i; ^ user.cpp:31:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[i]>dp[l[first[i]]]) l[first[i]]=i; ^