运行 ID: 34417

Main.cc:18:45: error: wrong number of template arguments (0, should be 1)
 priority_queue , greater <> > pq;
                                             ^
In file included from /usr/include/c++/7/string:48:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/istream:38,
                 from /usr/include/c++/7/sstream:38,
                 from /usr/include/c++/7/complex:45,
                 from /usr/include/c++/7/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:52,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_function.h:371:12: note: provided for ‘template struct std::greater’
     struct greater : public binary_function<_Tp, _Tp, bool>
            ^~~~~~~
Main.cc:18:47: error: template argument 3 is invalid
 priority_queue , greater <> > pq;
                                               ^
Main.cc: In function ‘int main()’:
Main.cc:36:20: error: request for member ‘empty’ in ‘pq’, which is of non-class type ‘int’
         while (!pq.empty() && pq.top() < i)
                    ^~~~~
Main.cc:36:34: error: request for member ‘top’ in ‘pq’, which is of non-class type ‘int’
         while (!pq.empty() && pq.top() < i)
                                  ^~~
Main.cc:37:16: error: request for member ‘pop’ in ‘pq’, which is of non-class type ‘int’
             pq.pop();
                ^~~
Main.cc:38:16: error: request for member ‘size’ in ‘pq’, which is of non-class type ‘int’
         if (pq.size() & 1)
                ^~~~
Main.cc:42:16: error: request for member ‘push’ in ‘pq’, which is of non-class type ‘int’
             pq.push(a[i]);
                ^~~~
Main.cc:23:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %s", &n, s + 1);
     ~~~~~^~~~~~~~~~~~~~~~~~~~
Main.cc:27:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a[i]);
         ~~~~~^~~~~~~~~~~~~
Main.cc:31:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &b[i]);
         ~~~~~^~~~~~~~~~~~~