oj.uz

Submission #1097465

# Submission time Handle Problem Language Result Execution time Memory
1097465 2024-10-07T12:42:24 Z avighna Meteors (POI11_met) C++17
74 / 100
 669 ms 65536 KB 
#include <bits/stdc++.h>

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

  FenwickTree(int n) : n(n) { f.resize(n + 1); }

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

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

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

  int n, m;
  std::cin >> n >> m;
  std::vector owned(n + 1, std::vector<int>());
  for (int i = 1, x; i <= m; ++i) {
    std::cin >> x;
    owned[x].push_back(i);
  }
  std::vector<long long> p(n + 1);
  for (int i = 1; i <= n; ++i) {
    std::cin >> p[i];
  }
  int k;
  std::cin >> k;
  struct Update {
    int l, r;
    long long a;
  };
  std::vector<Update> upd(k);
  for (auto &[l, r, a] : upd) {
    std::cin >> l >> r >> a;
  }

  struct State {
    int i, l, r;
  };
  std::vector midpoints(k, std::vector<State>());
  for (int i = 0; i < n; ++i) {
    midpoints[(k - 1) / 2].push_back({i, 0, k - 1});
  }
  std::vector<int> ans(n, k);
  while (true) {
    FenwickTree tree(m + 1);
    auto apply = [&](int l, int r, long long d) {
      tree.add(l, d);
      tree.add(r + 1, -d);
    };
    bool changed = false;
    for (int i = 0; i < k; ++i) {
      if (upd[i].l <= upd[i].r) {
        apply(upd[i].l, upd[i].r, upd[i].a);
      } else {
        apply(upd[i].l, m, upd[i].a);
        apply(1, upd[i].r, upd[i].a);
      }
      while (!midpoints[i].empty()) {
        changed = true;
        auto [_i, l, r] = midpoints[i].back();
        midpoints[i].pop_back();
        if (l > r) {
          continue;
        }
        long long obtained = 0;
        for (auto &x : owned[_i + 1]) {
          obtained += tree.query(x);
          if (obtained >= p[_i + 1]) {
            break;
          }
        }
        if (obtained >= p[_i + 1]) {
          ans[_i] = std::min(ans[_i], i);
        }
        if (l < r) {
          if (obtained >= p[_i + 1] and l + i - 1 >= 0) {
            midpoints[(l + i - 1) / 2].push_back({_i, l, i - 1});
          }
          if (obtained < p[_i + 1] and i + r + 1 < 2 * k) {
            midpoints[(i + r + 1) / 2].push_back({_i, i + 1, r});
          }
        }
      }
    }
    if (!changed) {
      break;
    }
  }
  for (auto &i : ans) {
    if (i == k) {
      std::cout << "NIE\n";
    } else {
      std::cout << i + 1 << '\n';
    }
  }
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 1 ms 348 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 508 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 5252 KB Output is correct
2 Correct 96 ms 10324 KB Output is correct
3 Correct 79 ms 8276 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 7236 KB Output is correct
2 Correct 68 ms 7312 KB Output is correct
3 Correct 94 ms 10776 KB Output is correct
4 Correct 19 ms 5176 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 5424 KB Output is correct
2 Correct 66 ms 11080 KB Output is correct
3 Correct 30 ms 3164 KB Output is correct
4 Correct 65 ms 9216 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 4040 KB Output is correct
2 Correct 77 ms 7308 KB Output is correct
3 Correct 43 ms 4680 KB Output is correct
4 Correct 101 ms 12144 KB Output is correct

Subtask #7
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 616 ms 53028 KB Output is correct
2 Correct 669 ms 23600 KB Output is correct
3 Correct 181 ms 12772 KB Output is correct
4 Runtime error 569 ms 65536 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #8
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 652 ms 50112 KB Output is correct
2 Correct 640 ms 21980 KB Output is correct
3 Correct 160 ms 11672 KB Output is correct
4 Runtime error 484 ms 65536 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -