View Compilation Error

0_0_3123228_22065.cpp: In function `void dijkstra(int, int)':
0_0_3123228_22065.cpp:39: error: `priority_queue' undeclared (first use this function)
0_0_3123228_22065.cpp:39: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3123228_22065.cpp:39: error: expected primary-expression before '>' token
0_0_3123228_22065.cpp:39: error: `que' undeclared (first use this function)