Compilare: main.cpp: In member function 'int skip_list::generateLevel()': main.cpp:169:34: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] 169 | while (lvl < maxh && val & 1 == 1) { | ~~^~~~ main.cpp: In member function 'void skip_list::erase(int)': main.cpp:161:12: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] 161 | delete ans; | ^~~