Compilare: user.cpp: In function ‘void Update(long long int*, long long int, long long int)’: user.cpp:7:10: warning: statement has no effect [-Wunused-value] for(x;x<=n;x=x+((x&(x-1))^x)) ^ user.cpp: In function ‘long long int Query(long long int*, long long int)’: user.cpp:12:10: warning: statement has no effect [-Wunused-value] for(x;x>0;x=x-((x&(x-1))^x)) ^ user.cpp: In function ‘int main()’: user.cpp:17:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("snpid.in","r",stdin); ^ user.cpp:18:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("snpid.out","w",stdout); ^ user.cpp:21:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:23:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&p[i]); ^