Compilare: main.cpp: In function 'void testCase()': main.cpp:71:53: warning: narrowing conversion of '(rng.std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>::operator()() % ((std::mersenne_twister_engine<long unsigned int, 32, 624, 397, 31, 2567483615, 11, 4294967295, 7, 2636928640, 15, 4022730752, 18, 1812433253>::result_type)((int)mod)))' 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] 71 | root[i] = new treapNode{NIL, NIL, NIL, i, rng() % mod, 1, false}; | ~~~~~~^~~~~ main.cpp: In function 'treapNode* join(ptr, ptr)': main.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type] 55 | } | ^