結果
問題 | No.2529 Treasure Hunter |
ユーザー |
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提出日時 | 2023-11-03 21:46:44 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 90 ms / 2,000 ms |
コード長 | 2,909 bytes |
コンパイル時間 | 2,999 ms |
コンパイル使用メモリ | 253,384 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-09-25 19:54:31 |
合計ジャッジ時間 | 5,766 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 22 |
ソースコード
#if __INCLUDE_LEVEL__ == 0#include __BASE_FILE__namespace {using Fp = atcoder::modint998244353;void solve() {int n, m;scan(n, m);array<Fp, 3> f{};f[0] = 1;while (m--) {array<Fp, 3> nf{};nf[0] = f[0] + f[1] + f[2];nf[1] = f[0] * n + f[1] * (n - 1) + f[2] * (n - 2);if (4 <= n) {nf[2] += f[0] * (Fp(n) * (n - 1) / 2 - n);nf[2] += f[1] * (Fp(n - 1) * (n - 2) / 2 - (n - 2));nf[2] += f[2] * (Fp(n - 2) * (n - 3) / 2 - (n - 4));}f = nf;}print(f[0] + f[1] + f[2]);}} // namespaceint main() {ios::sync_with_stdio(false);cin.tie(nullptr);int t;scan(t);while (t--) {solve();}}#else // __INCLUDE_LEVEL__#include <bits/stdc++.h>using namespace std;#include <atcoder/modint>namespace std {template <class T1, class T2>istream& operator>>(istream& is, pair<T1, T2>& p) {return is >> p.first >> p.second;}template <class... Ts>istream& operator>>(istream& is, tuple<Ts...>& t) {return apply([&is](auto&... xs) -> istream& { return (is >> ... >> xs); }, t);}template <class R, enable_if_t<!is_same_v<R, string&>>* = nullptr>auto operator>>(istream& is, R&& r) -> decltype(is >> *begin(r)) {for (auto&& e : r) {is >> e;}return is;}template <class T1, class T2>ostream& operator<<(ostream& os, const pair<T1, T2>& p) {return os << p.first << ' ' << p.second;}template <class... Ts>ostream& operator<<(ostream& os, const tuple<Ts...>& t) {auto f = [&os](const auto&... xs) -> ostream& {[[maybe_unused]] auto sep = "";((os << exchange(sep, " ") << xs), ...);return os;};return apply(f, t);}template <class R, enable_if_t<!is_convertible_v<R, string_view>>* = nullptr>auto operator<<(ostream& os, R&& r) -> decltype(os << *begin(r)) {auto sep = "";for (auto&& e : r) {os << exchange(sep, " ") << e;}return os;}} // namespace stdnamespace atcoder {template <class T, 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, internal::is_modint_t<T>* = nullptr>ostream& operator<<(ostream& os, const T& x) {return os << x.val();}} // namespace atcodertemplate <class... Ts>void scan(Ts&&... xs) {(cin >> ... >> xs);}template <class... Ts>void print(Ts&&... xs) {cout << tie(xs...) << '\n';}inline auto rep(int l, int r) { return views::iota(min(l, r), r); }inline auto rep(int n) { return rep(0, n); }inline auto rep1(int l, int r) { return rep(l, r + 1); }inline auto rep1(int n) { return rep(1, n + 1); }inline auto per(int l, int r) { return rep(l, r) | views::reverse; }inline auto per(int n) { return per(0, n); }inline auto per1(int l, int r) { return per(l, r + 1); }inline auto per1(int n) { return per(1, n + 1); }inline auto len = ranges::ssize;#endif // __INCLUDE_LEVEL__