Compilare: user.cpp: In function ‘void update(int, int)’: user.cpp:7:23: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for(; poz<=n;poz+=poz&(poz-1)^poz) ^ user.cpp: In function ‘int query(int)’: user.cpp:13:20: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] for(; poz;poz-=poz&(poz-1)^poz) ^ user.cpp: In function ‘int main()’: user.cpp:19:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("datorii.in","r",stdin); ^ user.cpp:20:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("datorii.out","w",stdout); ^ user.cpp:22:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:25:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:30:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&ok,&t,&v); ^