Compilare: main.cpp: In function 'void upd(int, int)': main.cpp:18:10: warning: statement has no effect [-Wunused-value] 18 | for (x; x <= n; x += lsb(x)) | ^ main.cpp: In function 'int qry(int)': main.cpp:24:10: warning: statement has no effect [-Wunused-value] 24 | for (x; x; x -= lsb(x)) | ^