Compilare: user.cpp: In function ‘int main()’: user.cpp:130:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < v.size(); ++i) ~~^~~~~~~~~~ user.cpp:27:76: warning: unused variable ‘K’ [-Wunused-variable] int aux, i, cnt = 0, x = 0, contor = 0, car = -1, valid = 1, y = 0, p, K = 0; ^ user.cpp:90:9: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (p) ^~