View Compilation Error

0_0_18020926_6444.cpp:1:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18020926_6444.cpp:2:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18020926_6444.cpp:3:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18020926_6444.cpp:4:10: error: #include expects "FILENAME" or <FILENAME>
 #include 
          ^
0_0_18020926_6444.cpp: In function 'int main()':
0_0_18020926_6444.cpp:10:30: error: 'scanf' was not declared in this scope
     while(~scanf("%d%d",&n,&k))
                              ^
0_0_18020926_6444.cpp:12:9: error: 'priority_queue' was not declared in this scope
         priority_queue,greater...        
         ^
0_0_18020926_6444.cpp:12:24: error: 'greater' was not declared in this scope
         priority_queue,greater...        
                        ^
0_0_18020926_6444.cpp:12:31: error: expected '}' at end of input
         priority_queue,greater...        
                               ^
0_0_18020926_6444.cpp:12:31: error: expected '}' at end of input