Compilare: user.cpp: In function ‘void Dfs1(int)’: user.cpp:30:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<Muchie[nod].size();i++){ ^ user.cpp: In function ‘void Dfs2(int)’: user.cpp:44:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<MuchieT[nod].size();i++){ ^ user.cpp: In function ‘void Kosaraju()’: user.cpp:54:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,nod; ^ user.cpp: In function ‘void solve()’: user.cpp:73:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<Muchie[nod].size();i++) { ^