結果

問題 No.1826 Fruits Collecting
ユーザー 👑 emthrmemthrm
提出日時 2022-01-29 00:03:37
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 179 ms / 2,000 ms
コード長 4,433 bytes
コンパイル時間 2,927 ms
コンパイル使用メモリ 213,132 KB
実行使用メモリ 12,940 KB
最終ジャッジ日時 2023-08-28 22:54:10
合計ジャッジ時間 9,324 ms
ジャッジサーバーID
(参考情報)
judge12 / judge11
このコードへのチャレンジ
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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 2 ms
4,380 KB
testcase_01 AC 2 ms
4,380 KB
testcase_02 AC 2 ms
4,376 KB
testcase_03 AC 3 ms
4,380 KB
testcase_04 AC 2 ms
4,376 KB
testcase_05 AC 67 ms
7,312 KB
testcase_06 AC 115 ms
10,940 KB
testcase_07 AC 80 ms
7,832 KB
testcase_08 AC 9 ms
4,376 KB
testcase_09 AC 111 ms
8,544 KB
testcase_10 AC 75 ms
7,528 KB
testcase_11 AC 73 ms
7,676 KB
testcase_12 AC 30 ms
5,068 KB
testcase_13 AC 15 ms
4,380 KB
testcase_14 AC 23 ms
4,380 KB
testcase_15 AC 177 ms
12,744 KB
testcase_16 AC 177 ms
12,940 KB
testcase_17 AC 176 ms
12,740 KB
testcase_18 AC 179 ms
12,748 KB
testcase_19 AC 176 ms
12,728 KB
testcase_20 AC 177 ms
12,660 KB
testcase_21 AC 175 ms
12,660 KB
testcase_22 AC 174 ms
12,792 KB
testcase_23 AC 176 ms
12,748 KB
testcase_24 AC 175 ms
12,744 KB
testcase_25 AC 2 ms
4,376 KB
testcase_26 AC 1 ms
4,376 KB
testcase_27 AC 1 ms
4,380 KB
testcase_28 AC 2 ms
4,380 KB
testcase_29 AC 2 ms
4,380 KB
testcase_30 AC 36 ms
5,376 KB
testcase_31 AC 74 ms
7,556 KB
testcase_32 AC 35 ms
5,156 KB
testcase_33 AC 119 ms
10,944 KB
testcase_34 AC 98 ms
8,360 KB
testcase_35 AC 22 ms
4,376 KB
testcase_36 AC 115 ms
10,804 KB
testcase_37 AC 82 ms
8,104 KB
testcase_38 AC 57 ms
7,204 KB
testcase_39 AC 99 ms
8,392 KB
testcase_40 AC 126 ms
9,104 KB
testcase_41 AC 27 ms
4,428 KB
testcase_42 AC 5 ms
4,376 KB
testcase_43 AC 1 ms
4,376 KB
testcase_44 AC 1 ms
4,376 KB
testcase_45 AC 2 ms
4,376 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 1000000007;
// constexpr int MOD = 998244353;
constexpr int DY[]{1, 0, -1, 0}, DX[]{0, -1, 0, 1};
constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1}, DX8[]{0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U> inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U> inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

template <typename T>
struct SegmentTree {
  using Monoid = typename T::Monoid;

  SegmentTree(int n) : SegmentTree(std::vector<Monoid>(n, T::id())) {}

  SegmentTree(const std::vector<Monoid> &a) : n(a.size()) {
    while (p2 < n) p2 <<= 1;
    dat.assign(p2 << 1, T::id());
    for (int i = 0; i < n; ++i) dat[i + p2] = a[i];
    for (int i = p2 - 1; i > 0; --i) dat[i] = T::merge(dat[i << 1], dat[(i << 1) + 1]);
  }

  void set(int idx, Monoid val) {
    idx += p2;
    dat[idx] = val;
    while (idx >>= 1) dat[idx] = T::merge(dat[idx << 1], dat[(idx << 1) + 1]);
  }

  Monoid get(int left, int right) const {
    Monoid l_res = T::id(), r_res = T::id();
    for (left += p2, right += p2; left < right; left >>= 1, right >>= 1) {
      if (left & 1) l_res = T::merge(l_res, dat[left++]);
      if (right & 1) r_res = T::merge(dat[--right], r_res);
    }
    return T::merge(l_res, r_res);
  }

  Monoid operator[](const int idx) const { return dat[idx + p2]; }

  template <typename G>
  int find_right(int left, G g) {
    if (left >= n) return n;
    Monoid val = T::id();
    left += p2;
    do {
      while (!(left & 1)) left >>= 1;
      Monoid nx = T::merge(val, dat[left]);
      if (!g(nx)) {
        while (left < p2) {
          left <<= 1;
          nx = T::merge(val, dat[left]);
          if (g(nx)) {
            val = nx;
            ++left;
          }
        }
        return left - p2;
      }
      val = nx;
      ++left;
    } while (__builtin_popcount(left) > 1);
    return n;
  }

  template <typename G>
  int find_left(int right, G g) {
    if (right <= 0) return -1;
    Monoid val = T::id();
    right += p2;
    do {
      --right;
      while (right > 1 && (right & 1)) right >>= 1;
      Monoid nx = T::merge(dat[right], val);
      if (!g(nx)) {
        while (right < p2) {
          right = (right << 1) + 1;
          nx = T::merge(dat[right], val);
          if (g(nx)) {
            val = nx;
            --right;
          }
        }
        return right - p2;
      }
      val = nx;
    } while (__builtin_popcount(right) > 1);
    return -1;
  }

private:
  int n, p2 = 1;
  std::vector<Monoid> dat;
};

namespace monoid {
template <typename T>
struct RangeMinimumQuery {
  using Monoid = T;
  static constexpr Monoid id() { return std::numeric_limits<Monoid>::max(); }
  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; }
};
}  // monoid

int main() {
  int n; cin >> n;
  vector<int> a(n + 1, 0), b(n + 1, 0), v(n + 1, 0);
  REP(i, n) {
    int t, x; cin >> t >> x >> v[i];
    a[i] = t + x;
    b[i] = t - x;
  }
  vector<int> ys = b;
  sort(ALL(ys));
  ys.erase(unique(ALL(ys)), ys.end());
  REP(i, n + 1) b[i] = lower_bound(ALL(ys), b[i]) - ys.begin();
  vector<int> ord(n + 1);
  iota(ALL(ord), 0);
  sort(ALL(ord), [&](int l, int r) -> bool { return a[l] != a[r] ? a[l] < a[r] : b[l] < b[r]; });
  SegmentTree<monoid::RangeMaximumQuery<ll>> seg(ys.size());
  for (int i : ord) {
    if (i == n) {
      seg.set(b[i], 0);
    } else {
      seg.set(b[i], seg.get(0, b[i] + 1) + v[i]);
    }
  }
  cout << seg.get(0, ys.size()) << '\n';
}
0