math/action/update_sumwithsize.hpp

View this file on GitHub
Last update: 2025-06-06 17:40:38+09:00
Include: #include "math/action/update_sumwithsize.hpp"

Depends on

Verified with

verify/unit_test/action.test.cpp

Code

#ifndef KK2_MATH_ACTION_UPDATE_SUMWITHSIZE_HPP
#define KK2_MATH_ACTION_UPDATE_SUMWITHSIZE_HPP 1

#include "../group/sum_with_size.hpp"
#include "../monoid/update.hpp"

namespace kk2 {

namespace action {

template <class T, class U> struct UpdateSumWithSize {
    using S = group::SumWithSize<T, U>;
    using A = monoid::Update<T>;

    inline static S act(A f, S x) { return f.is_unit ? x : S(f.a * x.size, x.size); }
};

} // namespace action

} // namespace kk2

#endif // KK2_MATH_ACTION_UPDATE_SUMWITHSIZE_HPP

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/documentation/build.py", line 71, in _render_source_code_stat
    bundled_code = language.bundle(stat.path, basedir=basedir, options={'include_paths': [basedir]}).decode()
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus.py", line 187, in bundle
    bundler.update(path)
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 401, in update
    self.update(self._resolve(pathlib.Path(included), included_from=path))
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 401, in update
    self.update(self._resolve(pathlib.Path(included), included_from=path))
  File "/opt/hostedtoolcache/Python/3.12.0/x64/lib/python3.12/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 312, in update
    raise BundleErrorAt(path, i + 1, "#pragma once found in a non-first line")
onlinejudge_verify.languages.cplusplus_bundle.BundleErrorAt: type_traits/io.hpp: line 4: #pragma once found in a non-first line