oj.uz

Submission #262843

# Submission time Handle Problem Language Result Execution time Memory
262843 2020-08-13T09:58:50 Z KoD Fireworks (APIO16_fireworks) C++11
55 / 100
 67 ms 49144 KB 
/**
 * @title Template
 */

#include <iostream>
#include <algorithm>
#include <utility>
#include <numeric>
#include <vector>
#include <array>
#include <cassert>
#include <iomanip>


template <class T, class U>
bool chmin(T &lhs, const U &rhs) {
  if (lhs > rhs) { 
    lhs = rhs; 
    return true; 
  }
  return false;
}

template <class T, class U>
bool chmax(T &lhs, const U &rhs) {
  if (lhs < rhs) { 
    lhs = rhs; 
    return true; 
  }
  return false;
}

/**
 * @title Chmin/Chmax
 */


class range {
public:
  class iterator {
  private:
    int64_t M_position;

  public:
    iterator(int64_t position) noexcept: M_position(position) { }
    void operator ++ () noexcept { ++M_position; }
    bool operator != (iterator other) const noexcept { return M_position != other.M_position; }
    int64_t operator * () const noexcept { return M_position; }

  };

  class reverse_iterator {
  private:
    int64_t M_position;
  
  public:
    reverse_iterator(int64_t position) noexcept: M_position(position) { }
    void operator ++ () noexcept { --M_position; }
    bool operator != (reverse_iterator other) const noexcept { return M_position != other.M_position; }
    int64_t operator * () const noexcept { return M_position; }

  };
  
private:
  const iterator M_first, M_last;

public:
  range(int64_t first, int64_t last) noexcept: M_first(first), M_last(std::max(first, last)) { }
  iterator begin() const noexcept { return M_first; }
  iterator end() const noexcept { return M_last; }
  reverse_iterator rbegin() const noexcept { return reverse_iterator(*M_last - 1); } 
  reverse_iterator rend() const noexcept { return reverse_iterator(*M_first - 1); } 

};

/**
 * @title Range
 */

#include <type_traits>
#include <iterator>

template <class T>
class rev_impl {
public:
  using iterator = decltype(std::declval<T>().rbegin());

private:
  const iterator M_begin;
  const iterator M_end;

public:
  rev_impl(T &&cont) noexcept: M_begin(cont.rbegin()), M_end(cont.rend()) { }
  iterator begin() const noexcept { return M_begin; }
  iterator end() const noexcept { return M_end; }

};

template <class T>
rev_impl<T> rev(T &&cont) {
  return rev_impl<T>(std::forward<T>(cont));
}

/**
 * @title Reverser
 */

using i32 = int32_t;
using i64 = int64_t;
using u32 = uint32_t;
using u64 = uint64_t;

constexpr i32 inf32 = (i32(1) << 30) - 1;
constexpr i64 inf64 = (i64(1) << 62) - 1;

constexpr size_t MAX = 5000;

i32 N, M, V;
std::array<i32, MAX> P, C;

struct status {
  i64 x, inc;
};

std::array<std::vector<status>, MAX> data;
std::array<std::vector<i32>, MAX> child;

void dfs(const i32 u) {
  if (u >= N) {
    data[u].push_back(status{ 0, -1 });
    data[u].push_back(status{ C[u], 2 });
    return;
  }
  for (auto v: child[u]) {
    dfs(v);
    const auto cur = data[u].size();
    data[u].resize(cur + data[v].size());
    std::copy(data[v].begin(), data[v].end(), data[u].begin() + cur);
    std::inplace_merge(data[u].begin(), data[u].begin() + cur, data[u].end(), [](status s, status t) {
      return s.x < t.x; 
    });
  }
  std::vector<status> next;
  i64 sum = 0;
  for (auto i: range(0, data[u].size())) {
    sum += data[u][i].inc;
    if (i + 1 == data[u].size() || data[u][i + 1].x != data[u][i].x) {
      next.push_back(status{ data[u][i].x, sum });
      sum = 0;
    }
  }
  data[u].swap(next);
  if (C[u] == 0) {
    return;
  }
  next.clear();
  next.push_back(data[u][0]);
  sum = data[u][0].inc;
  for (auto i: range(1, data[u].size())) {
    if (sum + data[u][i].inc == 0) {
      if (-1 - sum != 0) next.push_back(status{ data[u][i].x, -1 - sum });
      next.push_back(status{ data[u][i].x + C[u], 1 });
      next.push_back(status{ data[u][i + 1].x + C[u], 1 });
      break;
    }
    if (sum + data[u][i].inc > 0) {
      if (-1 - sum != 0) next.push_back(status{ data[u][i].x, -1 - sum });
      next.push_back(status{ data[u][i].x + C[u], 2 });
      break;
    }
    sum += data[u][i].inc;
    next.push_back(data[u][i]);
  }
  data[u] = std::move(next);
}

int main() {
  std::cin >> N >> M;
  V = N + M;
  P[0] = -1;
  for (auto i: range(1, V)) {
    std::cin >> P[i] >> C[i];
    --P[i];
    child[P[i]].push_back(i);
  }
  dfs(0);
  i64 sum = 0;
  for (auto i: range(1, V)) {
    sum += C[i];
  }
  i64 slope = data[0][0].inc;
  i64 last = 0;
  for (auto i: range(1, data[0].size())) {
    sum += slope * (data[0][i].x - last);
    slope += data[0][i].inc;
    last = data[0][i].x;
    if (slope >= 0) {
      break;
    }
  }
  std::cout << sum << '\n';
  return 0;
}

Compilation message

fireworks.cpp: In function 'void dfs(i32)':
fireworks.cpp:148:15: warning: comparison of integer expressions of different signedness: 'long int' and 'std::vector<status>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  148 |     if (i + 1 == data[u].size() || data[u][i + 1].x != data[u][i].x) {
      |         ~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 544 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 640 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 640 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 640 KB Output is correct
12 Correct 1 ms 640 KB Output is correct
13 Correct 1 ms 640 KB Output is correct
14 Correct 1 ms 640 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 640 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 1 ms 640 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 544 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 1 ms 512 KB Output is correct
18 Correct 1 ms 512 KB Output is correct
19 Correct 1 ms 640 KB Output is correct
20 Correct 1 ms 512 KB Output is correct
21 Correct 1 ms 640 KB Output is correct
22 Correct 1 ms 640 KB Output is correct
23 Correct 1 ms 640 KB Output is correct
24 Correct 1 ms 640 KB Output is correct
25 Correct 1 ms 640 KB Output is correct
26 Correct 1 ms 640 KB Output is correct
27 Correct 1 ms 640 KB Output is correct
28 Correct 1 ms 640 KB Output is correct
29 Correct 1 ms 640 KB Output is correct
30 Correct 1 ms 640 KB Output is correct
31 Correct 3 ms 1024 KB Output is correct
32 Correct 4 ms 1024 KB Output is correct
33 Correct 5 ms 1280 KB Output is correct
34 Correct 9 ms 1664 KB Output is correct
35 Correct 10 ms 2560 KB Output is correct
36 Correct 10 ms 2432 KB Output is correct
37 Correct 14 ms 2304 KB Output is correct
38 Correct 15 ms 4736 KB Output is correct
39 Correct 13 ms 2816 KB Output is correct
40 Correct 9 ms 1792 KB Output is correct
41 Correct 9 ms 1792 KB Output is correct
42 Correct 9 ms 1024 KB Output is correct
43 Correct 67 ms 49144 KB Output is correct
44 Correct 62 ms 39800 KB Output is correct
45 Correct 55 ms 38392 KB Output is correct
46 Correct 10 ms 1280 KB Output is correct
47 Correct 9 ms 1280 KB Output is correct
48 Correct 11 ms 1152 KB Output is correct
49 Correct 13 ms 1152 KB Output is correct
50 Correct 13 ms 1152 KB Output is correct
51 Correct 13 ms 1152 KB Output is correct
52 Correct 13 ms 1920 KB Output is correct
53 Correct 11 ms 1280 KB Output is correct
54 Correct 21 ms 1396 KB Output is correct

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 544 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 1 ms 512 KB Output is correct
18 Correct 1 ms 512 KB Output is correct
19 Correct 1 ms 640 KB Output is correct
20 Correct 1 ms 512 KB Output is correct
21 Correct 1 ms 640 KB Output is correct
22 Correct 1 ms 640 KB Output is correct
23 Correct 1 ms 640 KB Output is correct
24 Correct 1 ms 640 KB Output is correct
25 Correct 1 ms 640 KB Output is correct
26 Correct 1 ms 640 KB Output is correct
27 Correct 1 ms 640 KB Output is correct
28 Correct 1 ms 640 KB Output is correct
29 Correct 1 ms 640 KB Output is correct
30 Correct 1 ms 640 KB Output is correct
31 Correct 3 ms 1024 KB Output is correct
32 Correct 4 ms 1024 KB Output is correct
33 Correct 5 ms 1280 KB Output is correct
34 Correct 9 ms 1664 KB Output is correct
35 Correct 10 ms 2560 KB Output is correct
36 Correct 10 ms 2432 KB Output is correct
37 Correct 14 ms 2304 KB Output is correct
38 Correct 15 ms 4736 KB Output is correct
39 Correct 13 ms 2816 KB Output is correct
40 Correct 9 ms 1792 KB Output is correct
41 Correct 9 ms 1792 KB Output is correct
42 Correct 9 ms 1024 KB Output is correct
43 Correct 67 ms 49144 KB Output is correct
44 Correct 62 ms 39800 KB Output is correct
45 Correct 55 ms 38392 KB Output is correct
46 Correct 10 ms 1280 KB Output is correct
47 Correct 9 ms 1280 KB Output is correct
48 Correct 11 ms 1152 KB Output is correct
49 Correct 13 ms 1152 KB Output is correct
50 Correct 13 ms 1152 KB Output is correct
51 Correct 13 ms 1152 KB Output is correct
52 Correct 13 ms 1920 KB Output is correct
53 Correct 11 ms 1280 KB Output is correct
54 Correct 21 ms 1396 KB Output is correct
55 Runtime error 11 ms 1408 KB Execution killed with signal 11 (could be triggered by violating memory limits)
56 Halted 0 ms 0 KB -