Compilare: main.cpp: In function 'void upd(int, int, int)': main.cpp:151:10: warning: statement has no effect [-Wunused-value] 151 | for (pos; pos <= n; pos += (pos & -pos)) | ^~~ main.cpp: In function 'long long int query(int)': main.cpp:156:10: warning: statement has no effect [-Wunused-value] 156 | for (pos; pos != 0; pos -= (pos & -pos)) | ^~~