Compilare: main.cpp: In function 'int main()': main.cpp:50:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<s.size();i++) { ~^~~~~~~~~ main.cpp:51:31: warning: array subscript has type 'char' [-Wchar-subscripts] sumepart[i+1][key[s[i]]]++; ^ main.cpp:71:43: warning: array subscript has type 'char' [-Wchar-subscripts] long long a=sumepart[k][key[ch]]; ^ main.cpp:72:58: warning: array subscript has type 'char' [-Wchar-subscripts] long long acaps=sumepart[k][key[swapchar(ch)]]; ^ main.cpp:107:33: warning: array subscript has type 'char' [-Wchar-subscripts] rasp+=sumepart[n][key[ch]]; ^