結果
問題 | No.1294 マウンテン数列 |
ユーザー | ei1333333 |
提出日時 | 2020-11-20 21:50:11 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 5,841 bytes |
コンパイル時間 | 2,604 ms |
コンパイル使用メモリ | 209,236 KB |
実行使用メモリ | 34,720 KB |
最終ジャッジ日時 | 2024-07-23 12:53:44 |
合計ジャッジ時間 | 10,352 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 3 ms
12,448 KB |
testcase_01 | AC | 3 ms
5,376 KB |
testcase_02 | AC | 3 ms
5,376 KB |
testcase_03 | AC | 3 ms
5,376 KB |
testcase_04 | AC | 3 ms
5,376 KB |
testcase_05 | AC | 1,583 ms
6,144 KB |
testcase_06 | TLE | - |
testcase_07 | AC | 3 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | TLE | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
ソースコード
#include <bits/stdc++.h> using namespace std; using int64 = long long; // const int mod = 1e9 + 7; const int mod = 998244353; const int64 infll = (1LL << 62) - 1; const int inf = (1 << 30) - 1; struct IoSetup { IoSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(10); cerr << fixed << setprecision(10); } } iosetup; template< typename T1, typename T2 > ostream &operator<<(ostream &os, const pair< T1, T2 > &p) { os << p.first << " " << p.second; return os; } template< typename T1, typename T2 > istream &operator>>(istream &is, pair< T1, T2 > &p) { is >> p.first >> p.second; return is; } template< typename T > ostream &operator<<(ostream &os, const vector< T > &v) { for(int i = 0; i < (int) v.size(); i++) { os << v[i] << (i + 1 != v.size() ? " " : ""); } return os; } template< typename T > istream &operator>>(istream &is, vector< T > &v) { for(T &in : v) is >> in; return is; } template< typename T1, typename T2 > inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); } template< typename T1, typename T2 > inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); } template< typename T = int64 > vector< T > make_v(size_t a) { return vector< T >(a); } template< typename T, typename... Ts > auto make_v(size_t a, Ts... ts) { return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...)); } template< typename T, typename V > typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) { t = v; } template< typename T, typename V > typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) { for(auto &e : t) fill_v(e, v); } template< typename F > struct FixPoint : F { FixPoint(F &&f) : F(forward< F >(f)) {} template< typename... Args > decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, forward< Args >(args)...); } }; template< typename F > inline decltype(auto) MFP(F &&f) { return FixPoint< F >{forward< F >(f)}; } template< int mod > struct ModInt { int x; ModInt() : x(0) {} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int) (1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while(b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; } friend istream &operator>>(istream &is, ModInt &a) { int64_t t; is >> t; a = ModInt< mod >(t); return (is); } static int get_mod() { return mod; } }; using modint = ModInt< mod >; /** * @brief Binary-Indexed-Tree(BIT) * @docs docs/binary-indexed-tree.md */ template< typename T > struct BinaryIndexedTree { vector< T > data; BinaryIndexedTree() = default; explicit BinaryIndexedTree(size_t sz) : data(sz + 1, 0) {} explicit BinaryIndexedTree(const vector< T > &vs) : data(vs.size() + 1, 0) { for(size_t i = 0; i < vs.size(); i++) data[i + 1] = vs[i]; for(size_t i = 1; i < data.size(); i++) { size_t j = i + (i & -i); if(j < data.size()) data[j] += data[i]; } } void add(int k, const T &x) { for(++k; k < (int) data.size(); k += k & -k) data[k] += x; } T query(int k) const { T ret = T(); for(++k; k > 0; k -= k & -k) ret += data[k]; return ret; } int lower_bound(T x) const { int i = 0; for(int k = 1 << (__lg(data.size() - 1) + 1); k > 0; k >>= 1) { if(i + k < data.size() && data[i + k] < x) { x -= data[i + k]; i += k; } } return i; } int upper_bound(T x) const { int i = 0; for(int k = 1 << (__lg(data.size() - 1) + 1); k > 0; k >>= 1) { if(i + k < data.size() && data[i + k] <= x) { x -= data[i + k]; i += k; } } return i; } }; int main() { int N; cin >> N; vector< int > A(N); cin >> A; vector< BinaryIndexedTree< modint >> dp(N, BinaryIndexedTree< modint >(2501)); dp[N - 1].add(A[N - 1] - A[N - 2], 2); for(int i = N - 3; i >= 0; i--) { for(int j = i + 2; j < N; j++) { for(int k = A[j] - A[i]; k < 2501; k++) { dp[i + 1].add(k, dp[j].query(k) - dp[j].query(k - 1)); } modint sum = dp[j].query(A[j] - A[i] - 1); dp[i + 1].add(A[j] - A[i], sum); } for(int j = i + 2; j < N; j++) { modint sum = 0; for(int k = 0; k < A[i + 1] - A[i]; k++) { modint v = dp[j].query(k) - dp[j].query(k - 1); sum += v; dp[j].add(k, -v); } dp[j].add(A[i + 1] - A[i], sum); } } modint ret = 0; for(int i = 0; i < N; i++) { for(int j = 1; j <= 2500; j++) { ret += (dp[i].query(j) - dp[i].query(j - 1)) * j; } } cout << ret << "\n"; }