Compilare: main.cpp: In function 'Node* mod_fiu(Node*, bool, Node*)': main.cpp:101:1: warning: no return statement in function returning non-void [-Wreturn-type] 101 | } | ^ main.cpp: In function 'Node* Add(Node*, int)': main.cpp:156:60: warning: narrowing conversion of 'my_rand.std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>::operator()()' from 'std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>::result_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 156 | return join(join(t.first,new Node{&nil,&nil,val,my_rand(),1}),t.second); | ~~~~~~~^~