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답안 #1057384

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1057384 2024-08-13T18:34:07 Z MilosMilutinovic Dungeon 3 (JOI21_ho_t5) C++14
100 / 100
 843 ms 303568 KB 
#include <bits/stdc++.h>

using namespace std;

const long long inf = (long long) (1e16);

const int N = (int) (4e7);

int root, tsz, ch[N][2];
pair<long long, long long> st[N];

void Modify(int& x, long long l, long long r, long long ll, long long rr, int a, long long b) {
  if (!x) {
    x = ++tsz;
  }
  if (ll <= l && r <= rr) {
    st[x].first += a;
    st[x].second += b;
    return;
  }
  long long mid = (l + r) >> 1;
  if (rr <= mid) {
    Modify(ch[x][0], l, mid, ll, rr, a, b);
  } else if (ll > mid) {
    Modify(ch[x][1], mid + 1, r, ll, rr, a, b);
  } else {
    Modify(ch[x][0], l, mid, ll, rr, a, b);
    Modify(ch[x][1], mid + 1, r, ll, rr, a, b);
  }
}

long long Query(int x, long long l, long long r, int i) {
  if (l == r) {
    return st[x].first * 1LL * i + st[x].second;
  }
  long long mid = (l + r) >> 1;
  if (i <= mid) {
    return st[x].first * 1LL * i + st[x].second + Query(ch[x][0], l, mid, i);
  } else {
    return st[x].first * 1LL * i + st[x].second + Query(ch[x][1], mid + 1, r, i);
  }
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<int> a(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  vector<int> b(n);
  for (int i = 0; i < n; i++) {
    cin >> b[i];
  }
  vector<int> L(n), R(n);
  {
    vector<int> stk;
    for (int i = 0; i < n; i++) {
      while (!stk.empty() && b[i] < b[stk.back()]) {
        stk.pop_back();
      }
      L[i] = stk.empty() ? -1 : stk.back();
      stk.push_back(i);
    }
  }
  {
    vector<int> stk;
    for (int i = n - 1; i >= 0; i--) {
      while (!stk.empty() && b[i] <= b[stk.back()]) {
        stk.pop_back();
      }
      R[i] = stk.empty() ? n : stk.back();
      stk.push_back(i);
    }
  }
  vector<long long> pref(n + 1);
  for (int i = 0; i < n; i++) {
    pref[i + 1] = pref[i] + a[i];
  }
  vector<int> s(m), t(m), u(m);
  for (int i = 0; i < m; i++) {
    cin >> s[i] >> t[i] >> u[i];
    --s[i]; --t[i]; --t[i];
  }
  const int LOG = 20;
  vector<vector<int>> mx(n, vector<int>(LOG));
  vector<vector<int>> mn(n, vector<int>(LOG));
  for (int i = 0; i < n; i++) {
    mx[i][0] = a[i];
    mn[i][0] = i;
  }
  auto Cmp = [&](int i, int j) {
    return b[i] < b[j] ? i : j;
  };
  for (int j = 1; j < LOG; j++) {
    for (int i = 0; i + (1 << j) <= n; i++) {
      mx[i][j] = max(mx[i][j - 1], mx[i + (1 << (j - 1))][j - 1]);
      mn[i][j] = Cmp(mn[i][j - 1], mn[i + (1 << (j - 1))][j - 1]);
    }
  }
  vector<int> logs(n + 1);
  for (int i = 2; i <= n; i++) {
    logs[i] = logs[i >> 1] + 1;
  }
  auto GetMax = [&](int l, int r) {
    int k = logs[r - l + 1];
    return max(mx[l][k], mx[r - (1 << k) + 1][k]);
  };
  auto GetMin = [&](int l, int r) {
    int k = logs[r - l + 1];
    return Cmp(mn[l][k], mn[r - (1 << k) + 1][k]);
  }; 
  vector<vector<array<long long, 4>>> qc(n);
  for (int i = 0; i < n; i++) {
    {
      // after L_i
      long long d = pref[R[i]] - pref[i];
      qc[i].push_back({0, d, b[i], 0});
      qc[i].push_back({d + 1, inf, 0, d * b[i]});
      if (L[i] != -1) {
        qc[L[i]].push_back({0, d, -b[i], 0});
        qc[L[i]].push_back({d + 1, inf, 0, -d * b[i]});
      }
    }
    if (L[i] != -1) {
      // before L_i
      vector<long long> v;
      v.push_back(0);
      v.push_back(inf);
      v.push_back(pref[R[i]] - pref[i]);
      v.push_back(pref[i] - pref[L[i]]);
      v.push_back(pref[R[i]] - pref[L[i]]);
      sort(v.begin(), v.end());
      v.erase(unique(v.begin(), v.end()), v.end());
      for (int j = 0; j + 1 < (int) v.size(); j++) {
        if (v[j] >= pref[R[i]] - pref[L[i]]) {
          break;
        }
        pair<long long, long long> p, q;
        if (pref[i] + v[j] < pref[R[i]]) {
          p = {1, pref[i]};
        } else {
          p = {0, pref[R[i]]};
        }
        if (pref[i] > pref[L[i]] + v[j]) {
          q = {0, pref[i]};
        } else {
          q = {1, pref[L[i]]};
        }
        pair<long long, long long> r;
        r.first = p.first - q.first;
        r.second = p.second - q.second;
        qc[L[i]].push_back({v[j], v[j + 1] - 1, r.first * b[i], r.second * b[i]});
      }
    }
  }
  vector<vector<int>> qs(n);
  vector<long long> res(m);
  for (int i = 0; i < m; i++) {
    if (GetMax(s[i], t[i]) > u[i]) {
      res[i] = -1;
      continue;
    }
    int low = s[i], high = t[i], pos = t[i];
    while (low <= high) {
      int mid = (low + high) >> 1;
      if (pref[t[i] + 1] - pref[mid] <= u[i]) {
        pos = mid;
        high = mid - 1;
      } else {
        low = mid + 1;
      }
    }
    pos = GetMin(pos, t[i]);
    qs[s[i]].push_back(i);
    qs[pos].push_back(~i);
    res[i] += (pref[t[i] + 1] - pref[pos]) * 1LL * b[pos];
  }
  for (int i = n - 1; i >= 0; i--) {
    for (auto& p : qc[i]) {
      Modify(root, 0, inf, p[0], p[1], p[2], p[3]);
    }
    for (int id : qs[i]) {
      if (id >= 0) {
        res[id] += Query(root, 0, inf, u[id]);
      } else {
        id = ~id;
        res[id] -= Query(root, 0, inf, u[id]);
      }
    }
  }
  for (int i = 0; i < m; i++) {
    cout << res[i] << '\n';
  }
  return 0;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 5212 KB Output is correct
2 Correct 11 ms 5240 KB Output is correct
3 Correct 4 ms 1884 KB Output is correct
4 Correct 9 ms 5212 KB Output is correct
5 Correct 11 ms 5212 KB Output is correct
6 Correct 6 ms 4188 KB Output is correct
7 Correct 13 ms 4852 KB Output is correct
8 Correct 8 ms 5212 KB Output is correct
9 Correct 5 ms 1884 KB Output is correct
10 Correct 10 ms 5212 KB Output is correct
11 Correct 9 ms 5596 KB Output is correct
12 Correct 6 ms 4188 KB Output is correct
13 Correct 10 ms 5344 KB Output is correct
14 Correct 8 ms 5076 KB Output is correct
15 Correct 10 ms 4964 KB Output is correct
16 Correct 8 ms 5212 KB Output is correct
17 Correct 8 ms 4640 KB Output is correct
18 Correct 8 ms 4960 KB Output is correct
19 Correct 4 ms 1884 KB Output is correct
20 Correct 9 ms 4972 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 154 ms 73556 KB Output is correct
2 Correct 154 ms 50800 KB Output is correct
3 Correct 178 ms 79552 KB Output is correct
4 Correct 76 ms 29720 KB Output is correct
5 Correct 181 ms 51220 KB Output is correct
6 Correct 644 ms 282784 KB Output is correct
7 Correct 596 ms 167972 KB Output is correct
8 Correct 752 ms 303568 KB Output is correct
9 Correct 360 ms 105408 KB Output is correct
10 Correct 718 ms 241388 KB Output is correct
11 Correct 715 ms 235776 KB Output is correct
12 Correct 373 ms 96444 KB Output is correct
13 Correct 624 ms 146544 KB Output is correct
14 Correct 627 ms 146408 KB Output is correct
15 Correct 587 ms 224308 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 699 ms 152804 KB Output is correct
2 Correct 667 ms 270440 KB Output is correct
3 Correct 326 ms 97472 KB Output is correct
4 Correct 588 ms 162124 KB Output is correct
5 Correct 575 ms 274104 KB Output is correct
6 Correct 640 ms 259548 KB Output is correct
7 Correct 595 ms 137116 KB Output is correct
8 Correct 612 ms 233948 KB Output is correct
9 Correct 284 ms 86256 KB Output is correct
10 Correct 548 ms 219320 KB Output is correct
11 Correct 645 ms 281480 KB Output is correct

Subtask #4
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 5212 KB Output is correct
2 Correct 11 ms 5240 KB Output is correct
3 Correct 4 ms 1884 KB Output is correct
4 Correct 9 ms 5212 KB Output is correct
5 Correct 11 ms 5212 KB Output is correct
6 Correct 6 ms 4188 KB Output is correct
7 Correct 13 ms 4852 KB Output is correct
8 Correct 8 ms 5212 KB Output is correct
9 Correct 5 ms 1884 KB Output is correct
10 Correct 10 ms 5212 KB Output is correct
11 Correct 9 ms 5596 KB Output is correct
12 Correct 6 ms 4188 KB Output is correct
13 Correct 10 ms 5344 KB Output is correct
14 Correct 8 ms 5076 KB Output is correct
15 Correct 10 ms 4964 KB Output is correct
16 Correct 8 ms 5212 KB Output is correct
17 Correct 8 ms 4640 KB Output is correct
18 Correct 8 ms 4960 KB Output is correct
19 Correct 4 ms 1884 KB Output is correct
20 Correct 9 ms 4972 KB Output is correct
21 Correct 154 ms 73556 KB Output is correct
22 Correct 154 ms 50800 KB Output is correct
23 Correct 178 ms 79552 KB Output is correct
24 Correct 76 ms 29720 KB Output is correct
25 Correct 181 ms 51220 KB Output is correct
26 Correct 644 ms 282784 KB Output is correct
27 Correct 596 ms 167972 KB Output is correct
28 Correct 752 ms 303568 KB Output is correct
29 Correct 360 ms 105408 KB Output is correct
30 Correct 718 ms 241388 KB Output is correct
31 Correct 715 ms 235776 KB Output is correct
32 Correct 373 ms 96444 KB Output is correct
33 Correct 624 ms 146544 KB Output is correct
34 Correct 627 ms 146408 KB Output is correct
35 Correct 587 ms 224308 KB Output is correct
36 Correct 699 ms 152804 KB Output is correct
37 Correct 667 ms 270440 KB Output is correct
38 Correct 326 ms 97472 KB Output is correct
39 Correct 588 ms 162124 KB Output is correct
40 Correct 575 ms 274104 KB Output is correct
41 Correct 640 ms 259548 KB Output is correct
42 Correct 595 ms 137116 KB Output is correct
43 Correct 612 ms 233948 KB Output is correct
44 Correct 284 ms 86256 KB Output is correct
45 Correct 548 ms 219320 KB Output is correct
46 Correct 645 ms 281480 KB Output is correct
47 Correct 608 ms 146636 KB Output is correct
48 Correct 843 ms 302528 KB Output is correct
49 Correct 338 ms 95964 KB Output is correct
50 Correct 635 ms 173112 KB Output is correct
51 Correct 568 ms 222364 KB Output is correct
52 Correct 664 ms 240536 KB Output is correct
53 Correct 607 ms 144980 KB Output is correct
54 Correct 675 ms 247880 KB Output is correct
55 Correct 324 ms 95048 KB Output is correct
56 Correct 525 ms 225104 KB Output is correct
57 Correct 665 ms 288984 KB Output is correct