Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:40:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<V[node].size();i++) ^ user.cpp: In function ‘int RMQ(int, int)’: user.cpp:98:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void DFS4(int, int)’: user.cpp:165:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Aux[node].size();j++) ^ user.cpp:173:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[node].size();i++) ^ user.cpp: In function ‘void DFS3(int, int)’: user.cpp:270:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[node].size();i++) ^ user.cpp:279:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<X[node].size();i++) ^ user.cpp:285:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<F[node].size();i++) ^ user.cpp:297:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<X2[node].size();i++) ^ user.cpp:299:13: warning: unused variable ‘neighb’ [-Wunused-variable] int neighb=X2[node][i]; ^ user.cpp:302:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<F2[node].size();i++) ^ user.cpp:304:13: warning: unused variable ‘neighb’ [-Wunused-variable] int neighb=F2[node][i].first; ^