Compilare: user.cpp: In function ‘int bsearch(int)’: user.cpp:24:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(step = 1 ; step < norm.size() ; step <<= 1); ^ user.cpp:27:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i + step < norm.size() && norm[i + step] <= val) ^ user.cpp: In function ‘int main()’: user.cpp:68:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(idx[i] == norm.size() && best[idx[i]] != -1){ ^