Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(vf[i] == v[node].size()) ~~~~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void Back(int)': main.cpp:57:23: warning: array subscript has type 'char' [-Wchar-subscripts] cn[its][it]--; ^ main.cpp:62:23: warning: array subscript has type 'char' [-Wchar-subscripts] cn[its][it]++; ^ main.cpp: In function 'int main()': main.cpp:94:34: warning: 'neighbour' may be used uninitialized in this function [-Wmaybe-uninitialized] unmod[neighbour] = 1; ~~~~~~~~~~~~~~~~~^~~