Compilare: user.cpp: In function ‘bool found(std::vector<bool>)’: user.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<V.size()-W.size()+1 && !_found;i++) ~^~~~~~~~~~~~~~~~~~~~ user.cpp:15:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<W.size();j++) ~^~~~~~~~~ user.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(j==W.size()-1) _found=1; ~^~~~~~~~~~~~ user.cpp: In function ‘std::vector<bool> getSol()’: user.cpp:47:1: warning: control reaches end of non-void function [-Wreturn-type] } ^