Compilare: main.cpp: In function 'void dfs(char, int)': main.cpp:25:26: warning: array subscript has type 'char' [-Wchar-subscripts] for(int i = 0;i<v[nod].size();i++) ^ main.cpp:25:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:26:18: warning: array subscript has type 'char' [-Wchar-subscripts] dfs(v[nod][i], suma+1); ^ main.cpp: In function 'int main()': main.cpp:38:15: warning: array subscript has type 'char' [-Wchar-subscripts] if(f[a] == 0) ^ main.cpp:39:33: warning: array subscript has type 'char' [-Wchar-subscripts] no.push_back(a), f[a] = 1; ^ main.cpp:40:15: warning: array subscript has type 'char' [-Wchar-subscripts] if(f[b] == 0) ^ main.cpp:41:33: warning: array subscript has type 'char' [-Wchar-subscripts] no.push_back(b), f[b] = 1; ^ main.cpp:42:12: warning: array subscript has type 'char' [-Wchar-subscripts] v[a].push_back(b); ^ main.cpp:46:21: warning: array subscript has type 'char' [-Wchar-subscripts] sort(v[no[i]].begin(), v[no[i]].end()); ^ main.cpp:46:39: warning: array subscript has type 'char' [-Wchar-subscripts] sort(v[no[i]].begin(), v[no[i]].end()); ^ main.cpp:53:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol[k].size();i++){ ~^~~~~~~~~~~~~~