Compilare: user.cpp: In function ‘bool BFS()’: user.cpp:35:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < graf[pVerif].size(); i++) { ~~^~~~~~~~~~~~~~~~~~~~~ user.cpp:26:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘int main()’: user.cpp:61:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < graf[n].size(); i++) { ~~^~~~~~~~~~~~~~~~