View Compilation Error

0_0_36693951_1537.cpp: In function 'int main()':
0_0_36693951_1537.cpp:42:1: error: 'priority_queue' was not declared in this scope
 priority_queue<Node> q;
 ^
0_0_36693951_1537.cpp:42:1: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:64:0,
                 from 0_0_36693951_1537.cpp:11:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_queue.h:370:11: note:   'std::priority_queue'
     class priority_queue
           ^
0_0_36693951_1537.cpp:42:20: error: expected primary-expression before '>' token
 priority_queue<Node> q;
                    ^
0_0_36693951_1537.cpp:42:22: error: 'q' was not declared in this scope
 priority_queue<Node> q;
                      ^