View Compilation Error

0_0_14199216_6968.cpp: In function 'void dijkstra()':
0_0_14199216_6968.cpp:19:34: error: template argument 2 is invalid
  priority_queue< pair<int,int> , vector< pair<int,int> > 
                                  ^
0_0_14199216_6968.cpp:19:34: error: template argument 3 is invalid
0_0_14199216_6968.cpp:19:2: error: expected unqualified-id at end of input
  priority_queue< pair<int,int> , vector< pair<int,int> > 
  ^
0_0_14199216_6968.cpp:19:2: error: expected '}' at end of input