Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:23:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[nod].size(); i++) ^ user.cpp: In function ‘void dfs2(int, int)’: user.cpp:35:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[nod].size(); i++) ^ user.cpp: In function ‘void BFmin()’: user.cpp:53:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < gn[nod].size(); i++) ^ user.cpp: In function ‘void BFmax()’: user.cpp:73:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < gnt[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:141:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < gn[i].size(); j++) ^