Compilare: main.cpp: In function 'std::set<int> solve(int, int, char*)': main.cpp:73:1: warning: control reaches end of non-void function [-Wreturn-type] 73 | } | ^ main.cpp: In function 'int main()': main.cpp:110:18: warning: 'dr' may be used uninitialized in this function [-Wmaybe-uninitialized] 110 | while(st <= dr) | ~~~^~~~~