Compilare: user.cpp: In function ‘void d0_euler(int)’: user.cpp:61:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^ user.cpp: In function ‘void d1_euler(int, int)’: user.cpp:87:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^ user.cpp: In function ‘void dfs(int)’: user.cpp:230:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^ user.cpp:248:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < paznici[nod].size(); i++) ^