Compilare: main.cpp: In function 'int main()': main.cpp:41:30: warning: array subscript has type 'char' [-Wchar-subscripts] fr[j][v2[s[j]]]++; ^ main.cpp:42:52: warning: array subscript has type 'char' [-Wchar-subscripts] maxim[j]=max(maxim[j],fr[j][v2[s[j]]]); ^ main.cpp:48:30: warning: array subscript has type 'char' [-Wchar-subscripts] fr[t][v2[s[j]]]++; ^ main.cpp:49:52: warning: array subscript has type 'char' [-Wchar-subscripts] maxim[t]=max(maxim[t],fr[t][v2[s[j]]]); ^