I am facing issue in using the Policy Based Data Structures in C++ as the following errors occur. So far I have tried:

1) Updated and used GCC

$ gcc NONAME00.cpp
NONAME00.cpp:8:10: fatal error: 'ext/pb_ds/assoc_container.hpp' file not found
#include <ext/pb_ds/assoc_container.hpp>
         ^~~~~~~~~~~~
1 error generated.

2) Updated and used G++

$ g++ NONAME00.cpp
NONAME00.cpp:8:10: fatal error: 'ext/pb_ds/assoc_container.hpp' file not found
#include <ext/pb_ds/assoc_container.hpp>
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.

3) Added the files <ext/pb_ds/assoc_container.hpp> and <ext/pb_ds/tree_policy.hpp> to respective locations and then again compiled with gcc and g++.

Can anyone tell me the solution to this?