View Compilation Error

0_0_5592485_16150.cpp: In function `int main()':
0_0_5592485_16150.cpp:3: error: `priority_queue' undeclared (first use this function)
0_0_5592485_16150.cpp:3: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5592485_16150.cpp:3: error: expected primary-expression before "int"
0_0_5592485_16150.cpp:3: error: expected `;' before "int"
0_0_5592485_16150.cpp:5: error: `cin' undeclared (first use this function)
0_0_5592485_16150.cpp:11: error: `q' undeclared (first use this function)
0_0_5592485_16150.cpp:13: error: `cout' undeclared (first use this function)
0_0_5592485_16150.cpp:20: error: `endl' undeclared (first use this function)