Compilare: main.cpp: In function 'void make_sol(int)': main.cpp:90:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | if (nec == edges.size()) int b = 1 / 0; | ~~~~^~~~~~~~~~~~~~~ main.cpp:90:40: warning: division by zero [-Wdiv-by-zero] 90 | if (nec == edges.size()) int b = 1 / 0; | ~~^~~ main.cpp:90:34: warning: unused variable 'b' [-Wunused-variable] 90 | if (nec == edges.size()) int b = 1 / 0; | ^ main.cpp: In function 'int binSearch()': main.cpp:36:12: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] 36 | return last; | ^~~~