結果
問題 | No.2484 Add to Variables |
ユーザー | risujiroh |
提出日時 | 2023-09-22 23:09:17 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 122 ms / 2,000 ms |
コード長 | 5,765 bytes |
コンパイル時間 | 4,729 ms |
コンパイル使用メモリ | 305,184 KB |
実行使用メモリ | 24,476 KB |
最終ジャッジ日時 | 2024-07-08 13:51:16 |
合計ジャッジ時間 | 8,017 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 14 ms
11,008 KB |
testcase_01 | AC | 14 ms
11,008 KB |
testcase_02 | AC | 16 ms
11,008 KB |
testcase_03 | AC | 15 ms
11,136 KB |
testcase_04 | AC | 15 ms
11,008 KB |
testcase_05 | AC | 16 ms
11,008 KB |
testcase_06 | AC | 15 ms
11,008 KB |
testcase_07 | AC | 15 ms
11,008 KB |
testcase_08 | AC | 15 ms
11,008 KB |
testcase_09 | AC | 15 ms
11,008 KB |
testcase_10 | AC | 22 ms
12,032 KB |
testcase_11 | AC | 37 ms
14,164 KB |
testcase_12 | AC | 61 ms
17,168 KB |
testcase_13 | AC | 37 ms
14,132 KB |
testcase_14 | AC | 60 ms
17,624 KB |
testcase_15 | AC | 20 ms
11,904 KB |
testcase_16 | AC | 62 ms
18,532 KB |
testcase_17 | AC | 37 ms
14,352 KB |
testcase_18 | AC | 60 ms
16,908 KB |
testcase_19 | AC | 122 ms
24,240 KB |
testcase_20 | AC | 21 ms
11,776 KB |
testcase_21 | AC | 119 ms
24,332 KB |
testcase_22 | AC | 21 ms
11,904 KB |
testcase_23 | AC | 40 ms
14,648 KB |
testcase_24 | AC | 113 ms
23,860 KB |
testcase_25 | AC | 66 ms
18,040 KB |
testcase_26 | AC | 40 ms
14,824 KB |
testcase_27 | AC | 61 ms
17,096 KB |
testcase_28 | AC | 63 ms
17,768 KB |
testcase_29 | AC | 63 ms
18,032 KB |
testcase_30 | AC | 27 ms
12,728 KB |
testcase_31 | AC | 115 ms
24,476 KB |
testcase_32 | AC | 112 ms
23,340 KB |
testcase_33 | AC | 111 ms
23,988 KB |
testcase_34 | AC | 37 ms
14,800 KB |
testcase_35 | AC | 64 ms
18,724 KB |
testcase_36 | AC | 39 ms
14,800 KB |
testcase_37 | AC | 64 ms
18,540 KB |
testcase_38 | AC | 63 ms
17,900 KB |
testcase_39 | AC | 112 ms
22,984 KB |
testcase_40 | AC | 18 ms
11,264 KB |
testcase_41 | AC | 38 ms
14,648 KB |
testcase_42 | AC | 26 ms
12,716 KB |
ソースコード
#if __INCLUDE_LEVEL__ == 0 #include __BASE_FILE__ namespace { using Fp = atcoder::modint998244353; Comb<Fp> comb(1e6); void solve() { int n, m; cin >> tie(n, m); vector<int> a(n); cin >> a; for (int i : per(1, n)) { a[i] -= a[i - 1]; } vector<vector<Fp>> q; for (int i : rep(1, n)) { vector<Fp> f(m + 1); for (int c : rep1(0, m)) { int d = c - a[i]; if (0 <= c + d && c + d <= m) { f[c + d] = comb.recip_fact(c) * comb.recip_fact(d); } } q.push_back(f); } for (int qi = 0; qi + 2 <= len(q); qi += 2) { q.push_back(atcoder::convolution(q[qi], q[qi + 1])); q.back().resize(m + 1); } int a1 = ALL(accumulate, a | views::drop(1), 0); vector<Fp> f(m + 1); for (int s : rep1(0, m)) { if ((a1 - s) & 1) { continue; } int c = a[0] + (a1 - s) / 2; int d = m - s - c; if (0 <= c + d && c + d <= m) { f[c + d] = comb.recip_fact(c) * comb.recip_fact(d); } } f = atcoder::convolution(f, q.back()); print(f[m] * comb.fact(m)); } } // namespace int main() { ios::sync_with_stdio(false); cin.tie(nullptr); solve(); } #else // __INCLUDE_LEVEL__ #include <bits/stdc++.h> using namespace std; #define ALL(f, r, ...) \ [&](auto&& _) { return f(begin(_), end(_), ##__VA_ARGS__); }(r) #include <atcoder/convolution> template <class T> vector<T> make_vector_for_overwrite(int n) { static_assert(is_trivially_destructible_v<T>); vector<T> v; v.reserve(n); auto p = (T**)&v; p[1] = p[2]; return v; } template <class T> class Comb { public: Comb() = default; explicit Comb(int max_n) : fact_(make_vector_for_overwrite<T>(max_n + 1)), recip_fact_(make_vector_for_overwrite<T>(max_n + 1)) { fact_[0] = 1; for (int n = 1; n <= max_n; ++n) { fact_[n] = fact_[n - 1] * n; } recip_fact_[max_n] = 1 / fact_[max_n]; for (int n = max_n; 1 <= n; --n) { recip_fact_[n - 1] = n * recip_fact_[n]; } } T recip(int n) const { assert(n); return n < 0 ? -recip(-n) : recip_fact_[n] * fact_[n - 1]; } T fact(int n) const { assert(0 <= n); return fact_[n]; } T recip_fact(int n) const { return n < 0 ? 0 : recip_fact_[n]; } T falling_fact(int n, int k) const { assert(0 <= n || n < k); if (n < 0) { T t = falling_fact(k - n - 1, k); return k & 1 ? -t : t; } return n < k ? 0 : recip_fact(n - k) * fact(n); } T recip_falling_fact(int n, int k) const { assert(n < 0 || k <= n); return falling_fact(n - k, -k); } T rising_fact(int n, int k) const { assert(n <= 0 || 0 < n + k); return falling_fact(n + k - 1, k); } T recip_rising_fact(int n, int k) const { assert(0 < n || n + k <= 0); return falling_fact(n - 1, -k); } T binom(int n, int k) const { if ((n < 0) ^ (k < 0) ^ (n < k)) { return 0; } if (n < 0 && k < 0) { k = n - k; } return recip_fact(k) * falling_fact(n, k); } T recip_binom(int n, int k) const { assert((0 <= n) ^ (0 <= k) ^ (k <= n)); k = max(k, n - k); return recip_falling_fact(n, k) * fact(k); } T multiset(int n, int k) const { return binom(n + k - 1, k); } T recip_multiset(int n, int k) const { assert((0 < n) ^ (0 <= k) ^ (0 < n + k)); return recip_binom(n + k - 1, k); } private: vector<T> fact_; vector<T> recip_fact_; }; template <class T, class U = T> bool chmin(T& x, U&& y) { return y < x && (x = forward<U>(y), true); } template <class T, class U = T> bool chmax(T& x, U&& y) { return x < y && (x = forward<U>(y), true); } 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... Ts> istream& operator>>(istream& is, tuple<Ts&...>&& t) { return is >> t; } template <class R, enable_if_t<!is_convertible_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 std namespace 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 atcoder 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__