Compilare: main.cpp: In function 'void dfs(int)': main.cpp:21:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'void drum(int, int)': main.cpp:40:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:59:12: warning: array subscript has type 'char' [-Wchar-subscripts] v[x].push_back(y); ^ main.cpp:60:15: warning: array subscript has type 'char' [-Wchar-subscripts] grad[y]++; ^ main.cpp:70:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol.size();i++){ ~^~~~~~~~~~~