Compilare: main.cpp: In function 'int bf(int, std::vector<int>*)': main.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for (i = 0; i < l[vf].size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:77:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (k = 0; k < l[2 * n + 1].size(); k++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:68:15: warning: 'e' may be used uninitialized in this function [-Wmaybe-uninitialized] 68 | for (i = 0; i < e; i++) | ~~^~~