Compilare: main.cpp: In function 'long double dist_min(const std::vector<Point>&, int, int)': main.cpp:65:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < band.size(); ++i) ~~^~~~~~~~~~~~~ main.cpp:67:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i + 1; j <= (i + 7) && j < band.size(); ++j) ~~^~~~~~~~~~~~~