結果

問題 No.2791 Beginner Contest
ユーザー risujirohrisujiroh
提出日時 2024-06-21 21:28:08
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 3 ms / 2,000 ms
コード長 3,893 bytes
コンパイル時間 2,896 ms
コンパイル使用メモリ 253,180 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-21 21:28:12
合計ジャッジ時間 3,519 ms
ジャッジサーバーID
(参考情報)
judge5 / judge3
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 17
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#if __INCLUDE_LEVEL__ == 0
#include __BASE_FILE__
namespace {
using Mint = atcoder::modint998244353;
void solve() {
Int n, k;
scan(n, k);
Vec<Mint> f(n + 1);
f[0] = 1;
for (i : rep(n)) {
f[i + 1] += f[i];
if (i + k <= n) {
f[i + k] += f[i];
}
}
print(f[n]);
}
} // namespace
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
std::cout << std::setprecision(std::numeric_limits<Float>::max_digits10);
solve();
}
#else // __INCLUDE_LEVEL__
#include <bits/stdc++.h>
#include <atcoder/modint>
using Int = int64_t;
using Float = double;
using Str = std::string;
template <class T1, class T2>
using Pair = std::pair<T1, T2>;
template <class... Ts>
using Tuple = std::tuple<Ts...>;
template <class T, size_t N>
using Arr = std::array<T, N>;
template <class T>
using Vec = std::vector<T>;
template <class T>
using Set = std::set<T>;
template <class T>
using Multiset = std::multiset<T>;
template <class K, class T>
using Map = std::map<K, T>;
template <class T>
using MinHeap = std::priority_queue<T, Vec<T>, std::greater<T>>;
template <class T>
using MaxHeap = std::priority_queue<T>;
namespace ranges = std::ranges;
namespace views = std::views;
inline constexpr auto len = ranges::ssize;
inline constexpr auto rev = views::reverse;
constexpr auto rep(Int l, Int r) { return views::iota(std::min(l, r), r); }
constexpr auto rep(Int n) { return rep(0, n); }
constexpr auto rep1(Int l, Int r) { return rep(l, r + 1); }
constexpr auto rep1(Int n) { return rep(1, n + 1); }
template <class T, class U = T>
bool chmin(T& x, U&& y) {
return y < x && (x = std::forward<U>(y), true);
}
template <class T, class U = T>
bool chmax(T& x, U&& y) {
return x < y && (x = std::forward<U>(y), true);
}
template <std::signed_integral T = Int>
T inf() {
T ret;
std::memset(&ret, 0x3f, sizeof(ret));
return ret;
}
template <std::floating_point T>
T inf() {
return std::numeric_limits<T>::infinity();
}
template <class T>
concept Range = ranges::range<T> && !std::convertible_to<T, std::string_view>;
template <class T>
concept TupleLike = std::__is_tuple_like<T>::value && !Range<T>;
namespace std {
istream& operator>>(istream& is, Range auto&& r) {
for (auto&& e : r) {
is >> e;
}
return is;
}
istream& operator>>(istream& is, TupleLike auto&& t) {
return apply([&](auto&... xs) -> istream& { return (is >> ... >> xs); }, t);
}
ostream& operator<<(ostream& os, Range auto&& r) {
for (string_view sep = ""; auto&& e : r) {
os << exchange(sep, " ") << e;
}
return os;
}
ostream& operator<<(ostream& os, TupleLike auto&& t) {
const auto f = [&](auto&... xs) -> ostream& {
[[maybe_unused]] string_view sep = "";
((os << exchange(sep, " ") << xs), ...);
return os;
};
return apply(f, t);
}
template <class T, atcoder::internal::is_modint_t<T>* = nullptr>
istream& operator>>(istream& is, T& x) {
int v;
is >> v;
x = T::raw(v);
return is;
}
template <class T, atcoder::internal::is_modint_t<T>* = nullptr>
ostream& operator<<(ostream& os, const T& x) {
return os << x.val();
}
} // namespace std
#define DEF_INC_OR_DEC(op) \
auto& operator op(Range auto&& r) { \
for (auto&& e : r) { \
op e; \
} \
return r; \
} \
auto& operator op(TupleLike auto&& t) { \
std::apply([](auto&... xs) { (op xs, ...); }, t); \
return t; \
}
DEF_INC_OR_DEC(++)
DEF_INC_OR_DEC(--)
#undef DEF_INC_OR_DEC
void scan(auto&&... xs) { std::cin >> std::tie(xs...); }
void print(auto&&... xs) { std::cout << std::tie(xs...) << '\n'; }
template <class F>
class fix {
public:
explicit fix(F f) : f_(std::move(f)) {}
decltype(auto) operator()(auto&&... xs) const {
return f_(std::ref(*this), std::forward<decltype(xs)>(xs)...);
}
private:
F f_;
};
#define for(...) for ([[maybe_unused]] auto&& __VA_ARGS__)
#endif // __INCLUDE_LEVEL__
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0