Compilare: user.cpp: In function ‘void update(int, int, int, int)’: user.cpp:14:19: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] update(poz<<1+1,mij+1,dr,val); ^ user.cpp: In function ‘void query(int, int, int, int, int)’: user.cpp:27:29: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] if (right>mij) query(poz<<1+1,mij+1,dr,left,right); ^ user.cpp: In function ‘int main()’: user.cpp:32:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("costperm.in","r",stdin); ^ user.cpp:33:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("costperm.out","w",stdout); ^ user.cpp:34:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:36:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x),v[x]=i; ^