Compilare: main.cpp: In function 'void update(int, int)': main.cpp:17:9: warning: statement has no effect [-Wunused-value] 17 | for(pos; pos<=n; pos+=(pos&-pos)) | ^~~ main.cpp: In function 'int calc(int)': main.cpp:24:9: warning: statement has no effect [-Wunused-value] 24 | for(pos; pos>0; pos-=(pos&-pos)) | ^~~