Compilare: user.cpp: In function ‘void bf(int)’: user.cpp:16:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < q.size(); i ++) { ^ user.cpp:19:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[in].size(); i ++) { ^ user.cpp: In function ‘void df(int)’: user.cpp:37:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[in].size(); i ++) { ^ user.cpp: In function ‘void dfsus(int, int)’: user.cpp:45:9: warning: unused variable ‘aux’ [-Wunused-variable] int aux = viz2[in], scad = viz2[in]; ^