Compilare: user.cpp: In function ‘int bsrc(std::vector<int>&, int, int)’: user.cpp:27:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<=L.size(); i<<=1); ^ user.cpp:29:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i + pos < L.size() && det(L[i+pos], x, y) > 0) ^ user.cpp: In function ‘int main()’: user.cpp:113:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<Blocks.size(); i++) { ^