Compilare: main.cpp: In function 'double nSquaredSol(std::vector<std::pair<long long int, long long int> >&)': main.cpp:27:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0; i < coordonate.size(); i++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:29:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int j = i + 1; j < coordonate.size(); j++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'double getMinDistFromStrip(std::vector<std::pair<long long int, long long int> >&, double)': main.cpp:41:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0; i < strip.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp:43:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int j = i + 1; j < strip.size() && strip[j].second - strip[i].second < d; j++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'double solve(std::vector<std::pair<long long int, long long int> >&, std::vector<std::pair<long long int, long long int> >&)': main.cpp:75:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0; i < sortatY.size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:101:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (long long int i = 0; i < sortatY.size(); i++) ~~^~~~~~~~~~~~~~~~