Code chạy bị lỗi "binary ‘<<’ : no operator found"

[Thai_Hoc_Nguyen]

Error 3 error C2679: binary ‘<<’ : no operator found which takes a right-hand operand of type ‘std::vector<_Ty>’ (or there is no acceptable conversion) \psf\home\documents\visual studio 2010\projects\sadfg\gfhfgh.cpp 52 1 sadfg

Mọi người giúp em !

[Rok_Hoang (Minh Hoàng)]

post code lên Học ơi
chắc do kiểu chưa được overload toán tử <<

[BreakDown (there're only 10 types of people in the world: Those who understand binary & those who dont)]

include iostream

using namespace std;