View Compilation Error

0_0_27509547_28903.cpp: In function 'void bfs(team)':
0_0_27509547_28903.cpp:41:5: error: 'priority_queue' is not a member of '__gnu_pbds'
     __gnu_pbds::priority_queue<int,greater<int>,pairing_heap_tag> Qu;
     ^
0_0_27509547_28903.cpp:41:5: note: suggested alternatives:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:64:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:85,
                 from 0_0_27509547_28903.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_queue.h:370:11: note:   'std::priority_queue'
     class priority_queue
           ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_queue.h:370:11: note:   'std::priority_queue'
0_0_27509547_28903.cpp:41:32: error: expected primary-expression before 'int'
     __gnu_pbds::priority_queue<int,greater<int>,pairing_heap_tag> Qu;
                                ^
0_0_27509547_28903.cpp:42:5: error: 'Qu' was not declared in this scope
     Qu.push(t);
     ^