View Compilation Error

0_0_23944906_23452.cpp: In function 'void bfs()':
0_0_23944906_23452.cpp:60:5: error: 'priority_queue' was not declared in this scope
     priority_queue <status> Q;
     ^
0_0_23944906_23452.cpp:60:27: error: expected primary-expression before '>' token
     priority_queue <status> Q;
                           ^
0_0_23944906_23452.cpp:60:29: error: 'Q' was not declared in this scope
     priority_queue <status> Q;
                             ^