Compilare: main.cpp: In function 'std::set<int> solve(int, int, char*)': main.cpp:87:1: warning: control reaches end of non-void function [-Wreturn-type] 87 | } | ^ main.cpp: In function 'int main()': main.cpp:124:18: warning: 'dr' may be used uninitialized in this function [-Wmaybe-uninitialized] 124 | while(st <= dr) | ~~~^~~~~