Compilare: main.cpp: In function 'long long int rez(long long int, int)': main.cpp:39:27: warning: array subscript has type 'char' [-Wchar-subscripts] if(cnt+i<v[aux].size() && v[aux][cnt+i]<=x)cnt+=i; ^ main.cpp:39:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cnt+i<v[aux].size() && v[aux][cnt+i]<=x)cnt+=i; ~~~~~^~~~~~~~~~~~~~ main.cpp:39:44: warning: array subscript has type 'char' [-Wchar-subscripts] if(cnt+i<v[aux].size() && v[aux][cnt+i]<=x)cnt+=i; ^ main.cpp:44:25: warning: array subscript has type 'char' [-Wchar-subscripts] long long nr=fr[rez1],nrcaps=fr[caps(rez1)]; ^ main.cpp:44:47: warning: array subscript has type 'char' [-Wchar-subscripts] long long nr=fr[rez1],nrcaps=fr[caps(rez1)]; ^ main.cpp: In function 'int main()': main.cpp:66:22: warning: array subscript has type 'char' [-Wchar-subscripts] for(auto i:s)fr[i]++; ^ main.cpp:67:31: warning: array subscript has type 'char' [-Wchar-subscripts] for(int i=0;i<n;i++)v[s[i]].push_back(i+1); ^