Compilare: main.cpp: In function 'void bf_dist(int)': main.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (i = 0; i < l[vf].size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:13:26: warning: variable 'start' set but not used [-Wunused-but-set-variable] 13 | int p = 1, u = 1, i, start; | ^~~~~ main.cpp: In function 'int main()': main.cpp:34:12: warning: unused variable 'j' [-Wunused-variable] 34 | {int m, i, j, z, t, nr = 0; | ^