Compilare: user.cpp: In function ‘void bfs()’: user.cpp:29:40: 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:43:36: 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:61:41: 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:81:42: 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:152:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < gn[i].size(); j++) ^