Compilare: main.cpp: In function 'int main()': main.cpp:113:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | if (nec > edges.size()) return -1; | ~~~~^~~~~~~~~~~~~~ main.cpp: In function 'int binSearch()': main.cpp:36:12: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] 36 | return last; | ^~~~