Compilare: main.cpp: In function 'void update(int, int)': main.cpp:22:9: warning: statement has no effect [-Wunused-value] 22 | for(pos; pos<=n; pos+=(pos&-pos)) | ^~~ main.cpp: In function 'int calc(int)': main.cpp:29:9: warning: statement has no effect [-Wunused-value] 29 | for(pos; pos>0; pos-=(pos&-pos)) | ^~~