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View Compilation Error

0_0_36572720_32425.cpp: In function 'void solve()':
0_0_36572720_32425.cpp:10:41: error: wrong number of template arguments (0, should be 1)
  priority_queue<int,vector<int>,greater<> >qa;
                                         ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:48:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_36572720_32425.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h:358:12: error: provided for 'template<class _Tp> struct std::greater'
     struct greater : public binary_function<_Tp, _Tp, bool>
            ^
0_0_36572720_32425.cpp:10:43: error: template argument 3 is invalid
  priority_queue<int,vector<int>,greater<> >qa;
                                           ^
0_0_36572720_32425.cpp:10:46: error: invalid type in declaration before ';' token
  priority_queue<int,vector<int>,greater<> >qa;
                                              ^
0_0_36572720_32425.cpp:11:44: error: wrong number of template arguments (0, should be 1)
     priority_queue<int,vector<int>,greater<> >qb;
                                            ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:48:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/locale_classes.h:40,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/ios_base.h:41,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:42,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_36572720_32425.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h:358:12: error: provided for 'template<class _Tp> struct std::greater'
     struct greater : public binary_function<_Tp, _Tp, bool>
            ^
0_0_36572720_32425.cpp:11:46: error: template argument 3 is invalid
     priority_queue<int,vector<int>,greater<> >qb;
                                              ^
0_0_36572720_32425.cpp:11:49: error: invalid type in declaration before ';' token
     priority_queue<int,vector<int>,greater<> >qb;
                                                 ^
0_0_36572720_32425.cpp:15:6: error: request for member 'push' in 'qa', which is of non-class type 'int'
   qa.push(a[i]);
      ^
0_0_36572720_32425.cpp:21:12: error: request for member 'push' in 'qb', which is of non-class type 'int'
         qb.push(b[i]);
            ^
0_0_36572720_32425.cpp:30:24: error: request for member 'top' in 'qa', which is of non-class type 'int'
         mia=min(mia,qa.top());
                        ^
0_0_36572720_32425.cpp:31:24: error: request for member 'top' in 'qa', which is of non-class type 'int'
         mib=min(mib,qa.top());
                        ^
0_0_36572720_32425.cpp:32:16: error: request for member 'top' in 'qa', which is of non-class type 'int'
         sa-=qa.top();qa.pop();
                ^
0_0_36572720_32425.cpp:32:25: error: request for member 'pop' in 'qa', which is of non-class type 'int'
         sa-=qa.top();qa.pop();
                         ^
0_0_36572720_32425.cpp:33:16: error: request for member 'top' in 'qb', which is of non-class type 'int'
         sb-=qb.top();qb.pop();
                ^
0_0_36572720_32425.cpp:33:25: error: request for member 'pop' in 'qb', which is of non-class type 'int'
         sb-=qb.top();qb.pop();
                         ^
0_0_36572720_32425.cpp:37:14: error: request for member 'size' in 'qa', which is of non-class type 'int'
     while(qa.size()!=t)
              ^
0_0_36572720_32425.cpp:40:12: error: request for member 'pop' in 'qa', which is of non-class type 'int'
         qa.pop();qb.pop();
            ^
0_0_36572720_32425.cpp:40:21: error: request for member 'pop' in 'qb', which is of non-class type 'int'
         qa.pop();qb.pop();
                     ^
0_0_36572720_32425.cpp:44:24: error: request for member 'top' in 'qa', which is of non-class type 'int'
         maa=max(maa,qa.top());
                        ^
0_0_36572720_32425.cpp:45:24: error: request for member 'top' in 'qb', which is of non-class type 'int'
         mab=max(mab,qb.top());
                        ^
0_0_36572720_32425.cpp:46:16: error: request for member 'top' in 'qa', which is of non-class type 'int'
         sa-=qa.top();qa.pop();
                ^
0_0_36572720_32425.cpp:46:25: error: request for member 'pop' in 'qa', which is of non-class type 'int'
         sa-=qa.top();qa.pop();
                         ^
0_0_36572720_32425.cpp:47:16: error: request for member 'top' in 'qb', which is of non-class type 'int'
         sb-=qb.top();qb.pop();
                ^
0_0_36572720_32425.cpp:47:25: error: request for member 'pop' in 'qb', which is of non-class type 'int'
         sb-=qb.top();qb.pop();
                         ^


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