結果
問題 | No.2374 ASKT Subsequences |
ユーザー | OnjoujiToki |
提出日時 | 2023-09-08 01:28:49 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,956 ms / 2,000 ms |
コード長 | 5,676 bytes |
コンパイル時間 | 1,986 ms |
コンパイル使用メモリ | 159,540 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-06-25 18:34:20 |
合計ジャッジ時間 | 20,276 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 | 5 ms
6,812 KB |
testcase_01 | AC | 10 ms
6,944 KB |
testcase_02 | AC | 4 ms
6,944 KB |
testcase_03 | AC | 12 ms
6,944 KB |
testcase_04 | AC | 21 ms
6,940 KB |
testcase_05 | AC | 10 ms
6,940 KB |
testcase_06 | AC | 12 ms
6,940 KB |
testcase_07 | AC | 69 ms
6,940 KB |
testcase_08 | AC | 32 ms
6,940 KB |
testcase_09 | AC | 44 ms
6,944 KB |
testcase_10 | AC | 141 ms
6,944 KB |
testcase_11 | AC | 312 ms
6,944 KB |
testcase_12 | AC | 221 ms
6,948 KB |
testcase_13 | AC | 174 ms
6,940 KB |
testcase_14 | AC | 400 ms
6,940 KB |
testcase_15 | AC | 500 ms
6,940 KB |
testcase_16 | AC | 353 ms
6,944 KB |
testcase_17 | AC | 683 ms
6,944 KB |
testcase_18 | AC | 980 ms
6,940 KB |
testcase_19 | AC | 931 ms
6,944 KB |
testcase_20 | AC | 1,371 ms
6,944 KB |
testcase_21 | AC | 1,499 ms
6,944 KB |
testcase_22 | AC | 1,291 ms
6,940 KB |
testcase_23 | AC | 975 ms
6,940 KB |
testcase_24 | AC | 975 ms
6,940 KB |
testcase_25 | AC | 253 ms
6,940 KB |
testcase_26 | AC | 1,818 ms
6,944 KB |
testcase_27 | AC | 502 ms
6,940 KB |
testcase_28 | AC | 600 ms
6,944 KB |
testcase_29 | AC | 1,956 ms
6,944 KB |
testcase_30 | AC | 1,132 ms
6,940 KB |
ソースコード
/* 💕💕💕💕💕 💗💗💗💗💗 /)/) ( . .) ( づ💗 💗💗💗 💗💗💗 💗💗💗💗💗💗💗💗💗 💗💗💗💗💗💗💗💗💗 💗💗💗💗💗💗💗 💗💗💗💗💗 💗💗💗 💗 */ #include <algorithm> #include <array> #include <bitset> #include <cassert> #include <chrono> #include <cmath> #include <complex> #include <cstdint> #include <cstring> #include <ctime> #include <deque> #include <iomanip> #include <iostream> #include <map> #include <numeric> #include <queue> #include <set> #include <stack> #include <unordered_map> #include <unordered_set> #include <vector> template <int mod> struct ModInt { int x; ModInt() : x(0) {} ModInt(long long 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^=(long long p) { // quick_pow here:3 ModInt res = 1; for (; p; p >>= 1) { if (p & 1) res *= *this; *this *= *this; } return *this = res; } 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; } ModInt operator^(long long 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; } explicit operator int() const { return x; } // added by QCFium ModInt operator=(const int p) { x = p; return ModInt(*this); } // added by QCFium ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while (b > 0) { t = a / b; a -= t * b; std::swap(a, b); u -= t * v; std::swap(u, v); } return ModInt(u); } friend std::ostream &operator<<(std::ostream &os, const ModInt<mod> &p) { return os << p.x; } friend std::istream &operator>>(std::istream &is, ModInt<mod> &a) { long long x; is >> x; a = ModInt<mod>(x); return (is); } }; template <typename T> struct DSU { std::vector<T> f, siz; DSU(int n) : f(n), siz(n, 1) { std::iota(f.begin(), f.end(), 0); } T leader(T x) { while (x != f[x]) x = f[x] = f[f[x]]; return x; } bool same(T x, T y) { return leader(x) == leader(y); } bool merge(T x, T y) { x = leader(x); y = leader(y); if (x == y) return false; siz[x] += siz[y]; f[y] = x; return true; } T size(int x) { return siz[leader(x)]; } }; using mint = ModInt<998244353>; template <typename T> struct SegmentTree { using Monoid = typename T::Monoid; explicit SegmentTree(int n) : SegmentTree(std::vector<Monoid>(n, T::id())) {} explicit SegmentTree(const std::vector<Monoid> &a) : n(a.size()), sz(1) { while (sz < n) sz <<= 1; data.assign(sz << 1, T::id()); std::copy(a.begin(), a.end(), data.begin() + sz); for (int i = sz - 1; i > 0; --i) { data[i] = T::merge(data[i << 1], data[(i << 1) + 1]); } } void set(int idx, const Monoid val) { idx += sz; data[idx] = val; while (idx >>= 1) data[idx] = T::merge(data[idx << 1], data[(idx << 1) + 1]); } Monoid get(int left, int right) const { Monoid res_l = T::id(), res_r = T::id(); for (left += sz, right += sz; left < right; left >>= 1, right >>= 1) { if (left & 1) res_l = T::merge(res_l, data[left++]); if (right & 1) res_r = T::merge(data[--right], res_r); } return T::merge(res_l, res_r); } Monoid operator[](const int idx) const { return data[idx + sz]; } private: const int n; int sz; // sz + 原数组坐标 = 线段树里的编号,1 based std::vector<Monoid> data; }; namespace monoid { template <typename T> struct RangeMinimumQuery { using Monoid = T; static constexpr Monoid id() { return std::numeric_limits<Monoid>::max() / 2; } static Monoid merge(const Monoid &a, const Monoid &b) { return std::min(a, b); } }; template <typename T> struct RangeMaximumQuery { using Monoid = T; static constexpr Monoid id() { return std::numeric_limits<Monoid>::lowest(); } static Monoid merge(const Monoid &a, const Monoid &b) { return std::max(a, b); } }; template <typename T> struct RangeSumQuery { using Monoid = T; static constexpr Monoid id() { return 0; } static Monoid merge(const Monoid &a, const Monoid &b) { return a + b; } }; } // namespace monoid void solve() { int n; std::cin >> n; std::vector a(n, 0); for (int &x : a) std::cin >> x; long long ans = 0; for (int k = 1; k <= 2000; k++) { std::unordered_map<int, int> cnt0, cnt1, cnt2; std::vector dp(n + 1, std::vector(4, 0LL)); for (int i = 0; i < n; i++) { dp[i + 1][0] = 1; dp[i + 1][1] = cnt0[a[i] - k - 10]; dp[i + 1][2] = cnt1[a[i] + k]; dp[i + 1][3] = cnt2[a[i] - k - 1]; cnt0[a[i]] += dp[i + 1][0]; cnt1[a[i]] += dp[i + 1][1]; cnt2[a[i]] += dp[i + 1][2]; ans += dp[i + 1][3]; } } std::cout << ans << '\n'; } int main() { int t = 1; std::ios::sync_with_stdio(false); std::cin.tie(nullptr); // std::cin >> t; while (t--) solve(); return 0; }