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View Compilation Error

0_0_37076421_221.cpp: In function 'void dij(int, int)':
0_0_37076421_221.cpp:64:5: error: reference to 'priority_queue' is ambiguous
     priority_queue<pair<ll, int> > q;
     ^
In file included from 0_0_37076421_221.cpp:3:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ext/pb_ds/priority_queue.hpp:83:9: note: candidates are: template<class _Tv, class Cmp_Fn, class Tag, class _Alloc> class __gnu_pbds::priority_queue
   class priority_queue
         ^
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_37076421_221.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_queue.h:370:11: note:                 template<class _Tp, class _Sequence, class _Compare> class std::priority_queue
     class priority_queue
           ^
0_0_37076421_221.cpp:64:34: error: expected primary-expression before '>' token
     priority_queue<pair<ll, int> > q;
                                  ^
0_0_37076421_221.cpp:64:36: error: 'q' was not declared in this scope
     priority_queue<pair<ll, int> > q;
                                    ^


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