Compilare: user.cpp: In function ‘int bfs()’: user.cpp:17:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<viz.size();i++) ^ user.cpp:26:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++){ ^ user.cpp: In function ‘void dfs1(int)’: user.cpp:39:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[s].size();i++) ^ user.cpp: In function ‘void dfs2(int)’: user.cpp:45:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[s].size();i++) ^ user.cpp: In function ‘void flux()’: user.cpp:53:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[n].size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:84:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<A.size();i++) ^ user.cpp:89:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<solutie.size();i++) ^