Compilare: user.cpp: In function ‘void binara(int, int)’: user.cpp:20:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (mids.size() == k) return; ~~~~~~~~~~~~^~~~ user.cpp: In function ‘int main()’: user.cpp:46:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < mids.size() - 1; ++i) { ~~^~~~~~~~~~~~~~~~~ user.cpp:44:13: warning: unused variable ‘i’ [-Wunused-variable] int i = 1; int nr = 1; ^