oj.uz

답안 #1087165

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1087165 2024-09-12T09:02:35 Z avighna Lasers (NOI19_lasers) C++17
63 / 100
 245 ms 262144 KB 
#include <bits/stdc++.h>

class FenwickTree {
public:
  std::vector<int> f;
  int n;

  FenwickTree(int n) {
    this->n = n;
    f.resize(n + 1);
  }

  void add(int idx, int del) {
    for (int i = idx; i <= n; i += i & (-i)) {
      f[i] += del;
    }
  }

  int query(int idx) {
    int ans = 0;
    for (int i = idx; i >= 1; i -= i & (-i)) {
      ans += f[i];
    }
    return ans;
  }
  int query(int l, int r) {
    if (l > r) {
      return 0;
    }
    int ans = query(r);
    if (l - 1 >= 1) {
      ans -= query(l - 1);
    }
    return ans;
  }
};

int main() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(nullptr);

  int l, r;
  std::cin >> l >> r;
  std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int>>,
                      std::greater<>>
      pq;
  std::vector<int> left(r), sum(r);
  std::vector<std::vector<int>> rows(r);
  FenwickTree tree(l + 1);
  // x blocks from right ==> l - x + 1 from left
  auto f = [&](int cnt) { return l - (sum[cnt] - left[cnt]) + 1; };
  for (int cnt = 0; cnt < r; ++cnt) {
    auto &v = rows[cnt];
    int len;
    std::cin >> len;
    v.resize(len);
    for (auto &i : v) {
      std::cin >> i;
    }
    std::reverse(v.begin(), v.end());
    sum[cnt] = std::accumulate(v.begin(), v.end(), 0);
    pq.push({left[cnt] + v.back(), cnt});
    v.pop_back();
    tree.add(f(cnt), 1);
  }

  int ans = 0;
  for (int _i = 1; _i <= l; ++_i) {
    while (!pq.empty() and pq.top().first < _i) {
      auto [l, i] = pq.top();
      pq.pop();
      tree.add(f(i), -1);
      left[i] = l;
      tree.add(f(i), 1);
      if (!rows[i].empty()) {
        pq.push({left[i] + rows[i].back(), i});
        rows[i].pop_back();
      }
    }
    int gs = tree.query(_i + 1, l + 1);
    // for (int j = 0; j < r; ++j) {
    //   gs += _i < l - (sum[j] - left[j]) + 1;
    // }
    ans += gs != r;
  }
  std::cout << ans << '\n';
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 132 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 132 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 5720 KB Output is correct
2 Correct 22 ms 4444 KB Output is correct
3 Correct 25 ms 4700 KB Output is correct
4 Correct 48 ms 5780 KB Output is correct
5 Correct 30 ms 5212 KB Output is correct
6 Correct 58 ms 6236 KB Output is correct
7 Correct 12 ms 3676 KB Output is correct
8 Correct 62 ms 6232 KB Output is correct
9 Correct 29 ms 5076 KB Output is correct
10 Correct 47 ms 5980 KB Output is correct

Subtask #4
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #5
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 5720 KB Output is correct
2 Correct 22 ms 4444 KB Output is correct
3 Correct 25 ms 4700 KB Output is correct
4 Correct 48 ms 5780 KB Output is correct
5 Correct 30 ms 5212 KB Output is correct
6 Correct 58 ms 6236 KB Output is correct
7 Correct 12 ms 3676 KB Output is correct
8 Correct 62 ms 6232 KB Output is correct
9 Correct 29 ms 5076 KB Output is correct
10 Correct 47 ms 5980 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 235 ms 42892 KB Output is correct
22 Correct 45 ms 4956 KB Output is correct
23 Correct 31 ms 4696 KB Output is correct
24 Correct 71 ms 6748 KB Output is correct
25 Correct 232 ms 42976 KB Output is correct
26 Correct 62 ms 5980 KB Output is correct
27 Correct 35 ms 4952 KB Output is correct
28 Correct 229 ms 42776 KB Output is correct
29 Correct 245 ms 43196 KB Output is correct
30 Correct 62 ms 5980 KB Output is correct

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 132 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -