Compilare: user.cpp: In function ‘void DFS1(int)’: user.cpp:30:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v1[x].size();i++) ^ user.cpp: In function ‘void DFS2(int)’: user.cpp:47:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v2[x].size();i++) ^ user.cpp: In function ‘int Lcp(int, int)’: user.cpp:163:8: warning: unused variable ‘i’ [-Wunused-variable] { int i,put,res=0; ^ user.cpp: In function ‘void Solve()’: user.cpp:188:14: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(i=p-1;i>=1;i--) ^