Eroare de compilare: main.cpp: In function 'bool cmp(std::pair<long long int, long long int>, std::pair<long long int, long long int>)': main.cpp:27:56: error: 'sign2' was not declared in this scope 27 | return (__int128) A.first * B.second <= (__int128) sign2 * B.first * A.second; | ^~~~~ main.cpp: In function 'void cht()': main.cpp:45:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<panta>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (int i = 0; i < stk.size() - 1; i++) | ~~^~~~~~~~~~~~~~~~ Non zero exit status: 1