View Compilation Error

0_0_30462393_32383.cpp: In function 'int main()':
0_0_30462393_32383.cpp:567:30: error: '__gnu_cxx::__alloc_traits<std::allocator<P3> >::value_type' has no member named 'read'
   for(int i=0;i<n;++i) ps[i].read();
                              ^