oj.uz

답안 #684886

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
684886 2023-01-22T18:24:56 Z peijar 별자리 3 (JOI20_constellation3) C++17
100 / 100
 266 ms 134120 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
 
string to_string(string s) { return s; }
template <typename T> string to_string(T v) {
  bool first = true;
  string res = "[";
  for (const auto &x : v) {
    if (!first)
      res += ", ";
    first = false;
    res += to_string(x);
  }
  res += "]";
  return res;
}
 
void dbg_out() { cout << endl; }
template <typename Head, typename... Tail> void dbg_out(Head H, Tail... T) {
  cout << ' ' << to_string(H);
  dbg_out(T...);
}
 
#ifdef DEBUG
#define dbg(...) cout << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif
 
template <class T> struct RMQ {
  vector<vector<T>> jmp;
  RMQ(const vector<T> &V) : jmp(1, V) {
    for (int pw = 1, k = 1; pw * 2 <= (int)V.size(); pw *= 2, ++k) {
      jmp.emplace_back((int)V.size() - pw * 2 + 1);
      for (int j = 0; j < (int)jmp[k].size(); ++j)
        jmp[k][j] = max(jmp[k - 1][j], jmp[k - 1][j + pw]);
    }
  }
  T query(int a, int b) { // [a, b)
    assert(a < b);
    int dep = 31 - __builtin_clz(b - a);
    return max(jmp[dep][a], jmp[dep][b - (1 << dep)]);
  }
};
 
template <class T> class Fenwick {
public:
  int lim;
  vector<T> bit;
 
  Fenwick(int n) : lim(n + 1), bit(lim) {}
 
  void upd(int pos, T val) {
    for (pos++; pos < lim; pos += pos & -pos)
      bit[pos] += val;
  }
 
  T sum(int r) { // < r
    T ret = 0;
    for (; r; r -= r & -r)
      ret += bit[r];
    return ret;
  }
 
  T sum(int l, int r) { // [l, r)
    return sum(r) - sum(l);
  }
 
  void rangeAdd(int deb, int fin, int x) { // [deb, fin)
    dbg(deb, fin, x);
    upd(deb, x);
    upd(fin, -x);
  }
 
  int point(int pos) { return sum(pos + 1); }
};
 
template <class T> using min_pq = priority_queue<T, vector<T>, greater<T>>;
 
signed main(void) {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
 
  int N;
  cin >> N;
  vector<int> height(N);
  for (int &x : height)
    cin >> x;
  vector<pair<int, int>> toRMQ;
  for (int i = 0; i < N; ++i)
    toRMQ.emplace_back(height[i], i);
  RMQ rmq(toRMQ);
 
  vector<vector<pair<int, int>>> onPos(N);
  int nbEtoiles;
  cin >> nbEtoiles;
  int totCost = 0;
  for (int i = 0; i < nbEtoiles; ++i) {
    int x, y, c;
    cin >> x >> y >> c;
    totCost += c;
    onPos[x - 1].emplace_back(y, c);
  }
 
  Fenwick<int> fen(N);
 
  auto DFS = [&](auto dfs, int deb, int fin,
                 int prevHeight) -> pair<min_pq<tuple<int, int, int>>, int> {
    auto [valMax, posMax] = rmq.query(deb, fin);
    min_pq<tuple<int, int, int>> toProcess;
    for (auto [y, c] : onPos[posMax])
      toProcess.emplace(y, posMax, c);
 
    int solFree = 0;
    int addL = 0, addR = 0;
    if (deb < posMax) {
      auto [toAdd, freeL] = dfs(dfs, deb, posMax, valMax);
      if (toAdd.size() > toProcess.size())
        toAdd.swap(toProcess);
      while (!toAdd.empty()) {
        toProcess.emplace(toAdd.top());
        toAdd.pop();
      }
      addL = freeL;
      solFree += freeL;
    }
    if (posMax + 1 < fin) {
      auto [toAdd, freeR] = dfs(dfs, posMax + 1, fin, valMax);
      if (toAdd.size() > toProcess.size())
        toAdd.swap(toProcess);
      while (!toAdd.empty()) {
        toProcess.emplace(toAdd.top());
        toAdd.pop();
      }
      addR = freeR;
      solFree += freeR;
    }
    fen.rangeAdd(posMax, fin, addL);
    fen.rangeAdd(deb, posMax + 1, addR);
 
    while (!toProcess.empty() and get<0>(toProcess.top()) <= prevHeight) {
      auto [y, x, c] = toProcess.top();
      toProcess.pop();
      int gain = c + fen.point(x);
      dbg(x, y, gain, fen.point(x));
      solFree = max(solFree, gain);
    }
    dbg(deb, fin, solFree);
    return pair(move(toProcess), solFree);
  };
  cout << totCost - DFS(DFS, 0, N, 1e18).second << endl;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 724 KB Output is correct
24 Correct 2 ms 724 KB Output is correct
25 Correct 2 ms 724 KB Output is correct
26 Correct 2 ms 724 KB Output is correct
27 Correct 2 ms 724 KB Output is correct
28 Correct 2 ms 724 KB Output is correct
29 Correct 2 ms 724 KB Output is correct
30 Correct 2 ms 724 KB Output is correct
31 Correct 2 ms 784 KB Output is correct
32 Correct 2 ms 1236 KB Output is correct
33 Correct 2 ms 1108 KB Output is correct
34 Correct 2 ms 980 KB Output is correct
35 Correct 3 ms 980 KB Output is correct
36 Correct 2 ms 1108 KB Output is correct
37 Correct 2 ms 1196 KB Output is correct
38 Correct 2 ms 1364 KB Output is correct
39 Correct 2 ms 724 KB Output is correct
40 Correct 2 ms 1236 KB Output is correct
41 Correct 2 ms 852 KB Output is correct
42 Correct 2 ms 724 KB Output is correct
43 Correct 2 ms 1236 KB Output is correct
44 Correct 2 ms 724 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 724 KB Output is correct
24 Correct 2 ms 724 KB Output is correct
25 Correct 2 ms 724 KB Output is correct
26 Correct 2 ms 724 KB Output is correct
27 Correct 2 ms 724 KB Output is correct
28 Correct 2 ms 724 KB Output is correct
29 Correct 2 ms 724 KB Output is correct
30 Correct 2 ms 724 KB Output is correct
31 Correct 2 ms 784 KB Output is correct
32 Correct 2 ms 1236 KB Output is correct
33 Correct 2 ms 1108 KB Output is correct
34 Correct 2 ms 980 KB Output is correct
35 Correct 3 ms 980 KB Output is correct
36 Correct 2 ms 1108 KB Output is correct
37 Correct 2 ms 1196 KB Output is correct
38 Correct 2 ms 1364 KB Output is correct
39 Correct 2 ms 724 KB Output is correct
40 Correct 2 ms 1236 KB Output is correct
41 Correct 2 ms 852 KB Output is correct
42 Correct 2 ms 724 KB Output is correct
43 Correct 2 ms 1236 KB Output is correct
44 Correct 2 ms 724 KB Output is correct
45 Correct 191 ms 68312 KB Output is correct
46 Correct 185 ms 67640 KB Output is correct
47 Correct 183 ms 66364 KB Output is correct
48 Correct 196 ms 68576 KB Output is correct
49 Correct 202 ms 66100 KB Output is correct
50 Correct 176 ms 65960 KB Output is correct
51 Correct 175 ms 66236 KB Output is correct
52 Correct 219 ms 67656 KB Output is correct
53 Correct 178 ms 67672 KB Output is correct
54 Correct 230 ms 118172 KB Output is correct
55 Correct 249 ms 105312 KB Output is correct
56 Correct 226 ms 98512 KB Output is correct
57 Correct 226 ms 93372 KB Output is correct
58 Correct 223 ms 104688 KB Output is correct
59 Correct 226 ms 104472 KB Output is correct
60 Correct 189 ms 134120 KB Output is correct
61 Correct 241 ms 70312 KB Output is correct
62 Correct 238 ms 121504 KB Output is correct
63 Correct 238 ms 69496 KB Output is correct
64 Correct 262 ms 67668 KB Output is correct
65 Correct 266 ms 122724 KB Output is correct
66 Correct 238 ms 69552 KB Output is correct