結果
問題 | No.1864 Shortest Paths Counting |
ユーザー | tokusakurai |
提出日時 | 2022-03-04 22:47:46 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 211 ms / 2,000 ms |
コード長 | 7,021 bytes |
コンパイル時間 | 2,435 ms |
コンパイル使用メモリ | 218,284 KB |
実行使用メモリ | 14,848 KB |
最終ジャッジ日時 | 2024-07-18 21:21:32 |
合計ジャッジ時間 | 7,531 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 200 ms
14,592 KB |
testcase_10 | AC | 200 ms
14,592 KB |
testcase_11 | AC | 187 ms
14,720 KB |
testcase_12 | AC | 207 ms
14,848 KB |
testcase_13 | AC | 186 ms
14,720 KB |
testcase_14 | AC | 194 ms
14,592 KB |
testcase_15 | AC | 211 ms
14,592 KB |
testcase_16 | AC | 175 ms
14,592 KB |
testcase_17 | AC | 199 ms
14,720 KB |
testcase_18 | AC | 185 ms
14,720 KB |
testcase_19 | AC | 176 ms
14,720 KB |
testcase_20 | AC | 210 ms
14,720 KB |
testcase_21 | AC | 204 ms
14,720 KB |
testcase_22 | AC | 188 ms
14,720 KB |
testcase_23 | AC | 203 ms
14,720 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 157 ms
14,592 KB |
testcase_26 | AC | 146 ms
14,592 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < n; i++) #define rep2(i, x, n) for (int i = x; i <= n; i++) #define rep3(i, x, n) for (int i = x; i >= n; i--) #define each(e, v) for (auto &e : v) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; template <typename T> bool chmax(T &x, const T &y) { return (x < y) ? (x = y, true) : false; } template <typename T> bool chmin(T &x, const T &y) { return (x > y) ? (x = y, true) : false; } template <typename T> int flg(T x, int i) { return (x >> i) & 1; } template <typename T> void print(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } template <typename T> void printn(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << '\n'; } template <typename T> int lb(const vector<T> &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template <typename T> int ub(const vector<T> &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template <typename T> void rearrange(vector<T> &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } template <typename T> vector<int> id_sort(const vector<T> &v, bool greater = false) { int n = v.size(); vector<int> ret(n); iota(begin(ret), end(ret), 0); sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; }); return ret; } template <typename S, typename T> pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first + q.first, p.second + q.second); } template <typename S, typename T> pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first - q.first, p.second - q.second); } template <typename S, typename T> istream &operator>>(istream &is, pair<S, T> &p) { S a; T b; is >> a >> b; p = make_pair(a, b); return is; } template <typename S, typename T> ostream &operator<<(ostream &os, const pair<S, T> &p) { return os << p.first << ' ' << p.second; } struct io_setup { io_setup() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout << fixed << setprecision(15); } } io_setup; const int inf = (1 << 30) - 1; const ll INF = (1LL << 60) - 1; // const int MOD = 1000000007; const int MOD = 998244353; template <int mod> struct Mod_Int { int x; Mod_Int() : x(0) {} Mod_Int(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} static int get_mod() { return mod; } Mod_Int &operator+=(const Mod_Int &p) { if ((x += p.x) >= mod) x -= mod; return *this; } Mod_Int &operator-=(const Mod_Int &p) { if ((x += mod - p.x) >= mod) x -= mod; return *this; } Mod_Int &operator*=(const Mod_Int &p) { x = (int)(1LL * x * p.x % mod); return *this; } Mod_Int &operator/=(const Mod_Int &p) { *this *= p.inverse(); return *this; } Mod_Int &operator++() { return *this += Mod_Int(1); } Mod_Int operator++(int) { Mod_Int tmp = *this; ++*this; return tmp; } Mod_Int &operator--() { return *this -= Mod_Int(1); } Mod_Int operator--(int) { Mod_Int tmp = *this; --*this; return tmp; } Mod_Int operator-() const { return Mod_Int(-x); } Mod_Int operator+(const Mod_Int &p) const { return Mod_Int(*this) += p; } Mod_Int operator-(const Mod_Int &p) const { return Mod_Int(*this) -= p; } Mod_Int operator*(const Mod_Int &p) const { return Mod_Int(*this) *= p; } Mod_Int operator/(const Mod_Int &p) const { return Mod_Int(*this) /= p; } bool operator==(const Mod_Int &p) const { return x == p.x; } bool operator!=(const Mod_Int &p) const { return x != p.x; } Mod_Int inverse() const { assert(*this != Mod_Int(0)); return pow(mod - 2); } Mod_Int pow(long long k) const { Mod_Int now = *this, ret = 1; for (; k > 0; k >>= 1, now *= now) { if (k & 1) ret *= now; } return ret; } friend ostream &operator<<(ostream &os, const Mod_Int &p) { return os << p.x; } friend istream &operator>>(istream &is, Mod_Int &p) { long long a; is >> a; p = Mod_Int<mod>(a); return is; } }; using mint = Mod_Int<MOD>; template <typename Operator_Monoid> struct Dual_Segment_Tree { using H = function<Operator_Monoid(Operator_Monoid, Operator_Monoid)>; int n, height; vector<Operator_Monoid> lazy; const H h; const Operator_Monoid e2; Dual_Segment_Tree(int m, const H &h, const Operator_Monoid &e2) : h(h), e2(e2) { n = 1, height = 0; while (n < m) n <<= 1, height++; lazy.assign(2 * n, e2); } inline void eval(int i) { if (i < n && lazy[i] != e2) { lazy[2 * i] = h(lazy[2 * i], lazy[i]); lazy[2 * i + 1] = h(lazy[2 * i + 1], lazy[i]); lazy[i] = e2; } } inline void thrust(int i) { for (int j = height; j > 0; j--) eval(i >> j); } void apply(int l, int r, const Operator_Monoid &x) { l = max(l, 0), r = min(r, n); if (l >= r) return; l += n, r += n; thrust(l), thrust(r - 1); while (l < r) { if (l & 1) lazy[l] = h(lazy[l], x), l++; if (r & 1) r--, lazy[r] = h(lazy[r], x); l >>= 1, r >>= 1; } } Operator_Monoid get(int i) { thrust(i + n); return lazy[i + n]; } Operator_Monoid operator[](int i) { return get(i); } }; int main() { int N; cin >> N; vector<ll> x(N), y(N); rep(i, N) cin >> x[i] >> y[i]; ll dx = abs(x[N - 1] - x[0]), dy = abs(y[N - 1] - y[0]); if (dx > dy) { rep(i, N) swap(x[i], y[i]); // } if (y[N - 1] > y[0]) { rep(i, N) y[i] *= -1; // } vector<ll> a(N), b(N); rep(i, N) { a[i] = x[i] - y[i]; b[i] = x[i] + y[i]; } vector<ll> bs = b; rearrange(bs); int K = sz(bs); vector<int> v(N); iota(all(v), 0); sort(all(v), [&](int i, int j) { if (a[i] != a[j]) return a[i] < a[j]; return b[i] > b[j]; }); // rep(i, N) cout << x[i] << ' ' << y[i] << ' ' << a[i] << ' ' << b[i] << '\n'; // print(v); vector<mint> dp(N + 1, 0); dp[0] = 1; auto h = [](mint a, mint b) { return a + b; }; Dual_Segment_Tree<mint> seg(K, h, 0); each(e, v) { int l = lb(bs, b[N - 1]), r = lb(bs, b[e]); dp[e] += seg[r]; if (r >= l) seg.apply(l, r + 1, dp[e]); } cout << dp[N - 1] << '\n'; }