Compilare: main.cpp: In function 'void sol(long long int, long long int, bool, long long int)': main.cpp:20:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sf-inc+1==start.size()){ ~~~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'int32_t main()': main.cpp:43:15: warning: array subscript has type 'char' [-Wchar-subscripts] d[start[0]][0]++; ^ main.cpp:44:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<start.size();i++){ ~^~~~~~~~~~~~~ main.cpp:45:19: warning: array subscript has type 'char' [-Wchar-subscripts] d[start[i]][i]++; ^ main.cpp:69:29: warning: array subscript has type 'char' [-Wchar-subscripts] long long tot=d[litf][start.size()-1]*alc/2+d[_caps(litf)][start.size()-1]*alc/2; ^ main.cpp:69:66: warning: array subscript has type 'char' [-Wchar-subscripts] long long tot=d[litf][start.size()-1]*alc/2+d[_caps(litf)][start.size()-1]*alc/2; ^ main.cpp:72:31: warning: array subscript has type 'char' [-Wchar-subscripts] tot+=d[_caps(litf)][y]; ^ main.cpp:74:24: warning: array subscript has type 'char' [-Wchar-subscripts] tot+=d[litf][y]; ^ main.cpp:78:35: warning: array subscript has type 'char' [-Wchar-subscripts] tot+=d[_caps(litf)][start.size()-1]; ^ main.cpp:80:30: warning: array subscript has type 'char' [-Wchar-subscripts] tot+=d[(litf)][start.size()-1]; ^ main.cpp:76:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(alc%2==1) ^