Compilare: user.cpp: In function ‘int main()’: user.cpp:26:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();++i) ^ user.cpp:28:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cost[v[i][v[i].size()-1]]<cost[v[i][0]]+1) ^ user.cpp:28:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cost[v[i][v[i].size()-1]]<cost[v[i][0]]+1) ^ user.cpp:30:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] cost[v[i][v[i].size()-1]]=cost[v[i][0]]+1; ^ user.cpp:30:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] cost[v[i][v[i].size()-1]]=cost[v[i][0]]+1; ^ user.cpp:31:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] ind[v[i][v[i].size()-1]]=i; ^ user.cpp:32:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cost[v[i][v[i].size()-1]]>maxim) ^ user.cpp:34:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] maxim=cost[v[i][v[i].size()-1]]; ^ user.cpp:37:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] par[i]=ind[v[i][0]]; ^