Eroare de compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:12:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[x].size();i++) ^ user.cpp:14:9: error: ‘p1’ was not declared in this scope p1[++k]=r; ^ user.cpp:14:14: error: ‘k’ was not declared in this scope p1[++k]=r; ^ user.cpp: In function ‘int main()’: user.cpp:48:14: error: ‘k’ was not declared in this scope OK=0;k=0; ^