Owl Get a Life

Compile Error

In file included from /usr/include/c++/9/algorithm:62,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:65,
from shoop.cpp:1:
/usr/include/c++/9/bits/stl_algo.h: In instantiation of ‘void std::shuffle(_RAIter, _RAIter, _UGenerator&&) [with _RAIter = std::pair<int, long long int>*; _UGenerator = xorshift32&]’:
shoop.cpp:36:30: required from here
/usr/include/c++/9/bits/stl_algo.h:3813:2: error: no type named ‘result_type’ in ‘std::remove_reference<xorshift32&>::type’ {aka ‘struct xorshift32’}
3813 | __uc_type;
| ^~~~~~~~~
/usr/include/c++/9/bits/stl_algo.h:3841:37: error: no type named ‘result_type’ in ‘std::remove_reference<xorshift32&>::type’ {aka ‘struct xorshift32’}
3841 | const pair<__uc_type, __uc_type> __pospos =
| ^~~~~~~~
/usr/include/c++/9/bits/stl_algo.h:3841:37: error: no type named ‘result_type’ in ‘std::remove_reference&l