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답안 #598135

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
598135 2022-07-17T17:03:23 Z cadmiumsky 별자리 3 (JOI20_constellation3) C++14
35 / 100
 710 ms 77000 KB 
#include <bits/stdc++.h>

using namespace std;
#define int ll
using ll = long long;
using pii = pair<int,int>;
const int nbit = 17, nmax = 2e5 + 5;

#define lsb(x) (x & -x)
struct AIB {
  vector<ll> tree; int len;
  void init(int n) {
    len = n;
    tree.clear(), tree.resize(n + 1, 0);
  }
  void upd(int x, int val) {
    while(x <= len) 
      tree[x] += val,
      x += lsb(x);
    return;
  }
  void upd(int l, int r, int val) {
    upd(l, val);
    upd(r + 1, -val);
  }
  int query(int x) {
    int sum = 0;
    while(x > 0) sum += tree[x], x -= lsb(x);
    return sum;
  }
};
int n, m;

namespace CartTree {
  vector<int> g[nmax];
  vector<pii> atrendpoint[nmax];
  int p[nmax][nbit], lson[nmax], rson[nmax], pin[nmax], pout[nmax], inp = 1;
  static int root;
  vector<int> v;
  ll dp[nmax], son[nmax];
  AIB pinexsum;
  
  void build(vector<int> abogus) {
    v = move(abogus);
    root = 0;
    for(int i = 0; i < n; i++) { //init carttree
      int lst = i - 1, lastval = -1;
      lson[i] = rson[i] = -1;
      while(lst >= 0 && v[lst] <= v[i])
        lastval = lst,
        lst = p[lst][0];
      p[i][0] = lst;
      lson[i] = lastval;
      if(lastval != -1)
        p[lastval][0] = i;
      if(lst != -1)
        rson[lst] = i;
    }
    for(int i = 0; i < n; i++) { // init tree
      if(lson[i] != -1)
        g[i].push_back(lson[i]),
        p[lson[i]][0] = i;
      if(rson[i] != -1)
        g[i].push_back(rson[i]),
        p[rson[i]][0] = i;
      if(p[i][0] == -1)
        root = i;
    }
    p[root][0] = root;
    for(int step = 1; step < nbit; step++)
      for(int i = 0; i < n; i++)
        p[i][step] = p[p[i][step - 1]][step - 1];
    auto dfs = [&](auto &&self, int node) -> void {
      pin[node] = inp++;
      for(auto x : g[node])
        self(self, x);
      pout[node] = inp - 1;
    };
    dfs(dfs, root);
    pinexsum.init(n + 1);
  }
  
  void addstar(int x, int height, int cost) {
    int temp = x;
    for(int i = nbit - 1; i >= 0; i--) {
      if(v[p[x][i]] < height)
        x = p[x][i];
    }
    atrendpoint[x].emplace_back(temp, cost);
  }
  
  void startdp(int node = root) {
    for(auto x : g[node])
      startdp(x),
      son[node] += dp[x];
    dp[node] = son[node];
    pinexsum.upd(pin[node], pout[node], son[node]);
    for(auto [x, cost] : atrendpoint[node])
      dp[node] = max(dp[node], (ll)cost + pinexsum.query(pin[x]));
    pinexsum.upd(pin[node], pout[node], -dp[node]);
  }
}

signed main() {
  cin >> n;
  vector<int> heights(n);
  for(auto &x : heights) 
    cin >> x;
  CartTree::build(heights);
  cin >> m;
  ll sum = 0;
  for(int i = 0, x, y, c; i < m; i++) {
    cin >> x >> y >> c;
    CartTree::addstar(x - 1, y, c);
    sum += c;
  }
  CartTree::startdp();
  cout << sum - CartTree::dp[CartTree::root] << '\n';
}
/*
 * 
 * 6   A 8   x 5
 *   x     x x x
 * x x     x x x
 * x x     x x x
 * x x 7 x x x x
 * x x x x x x x
 * x x x x x x x 
 * 
 * 
 */

Compilation message

constellation3.cpp: In function 'void CartTree::startdp(ll)':
constellation3.cpp:98:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   98 |     for(auto [x, cost] : atrendpoint[node])
      |              ^

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9812 KB Output is correct
2 Correct 5 ms 9804 KB Output is correct
3 Correct 5 ms 9812 KB Output is correct
4 Correct 5 ms 9812 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 5 ms 9812 KB Output is correct
7 Correct 7 ms 9812 KB Output is correct
8 Correct 7 ms 9812 KB Output is correct
9 Correct 5 ms 9812 KB Output is correct
10 Correct 5 ms 9812 KB Output is correct
11 Correct 5 ms 9812 KB Output is correct
12 Correct 5 ms 9824 KB Output is correct
13 Correct 6 ms 9812 KB Output is correct
14 Correct 5 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 5 ms 9828 KB Output is correct
17 Correct 5 ms 9812 KB Output is correct
18 Correct 5 ms 9812 KB Output is correct
19 Correct 6 ms 9812 KB Output is correct
20 Correct 6 ms 9812 KB Output is correct
21 Correct 6 ms 9812 KB Output is correct
22 Correct 8 ms 9796 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9812 KB Output is correct
2 Correct 5 ms 9804 KB Output is correct
3 Correct 5 ms 9812 KB Output is correct
4 Correct 5 ms 9812 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 5 ms 9812 KB Output is correct
7 Correct 7 ms 9812 KB Output is correct
8 Correct 7 ms 9812 KB Output is correct
9 Correct 5 ms 9812 KB Output is correct
10 Correct 5 ms 9812 KB Output is correct
11 Correct 5 ms 9812 KB Output is correct
12 Correct 5 ms 9824 KB Output is correct
13 Correct 6 ms 9812 KB Output is correct
14 Correct 5 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 5 ms 9828 KB Output is correct
17 Correct 5 ms 9812 KB Output is correct
18 Correct 5 ms 9812 KB Output is correct
19 Correct 6 ms 9812 KB Output is correct
20 Correct 6 ms 9812 KB Output is correct
21 Correct 6 ms 9812 KB Output is correct
22 Correct 8 ms 9796 KB Output is correct
23 Correct 9 ms 10196 KB Output is correct
24 Correct 8 ms 10196 KB Output is correct
25 Correct 9 ms 10196 KB Output is correct
26 Correct 8 ms 10196 KB Output is correct
27 Correct 8 ms 10140 KB Output is correct
28 Correct 7 ms 10196 KB Output is correct
29 Correct 8 ms 10196 KB Output is correct
30 Correct 10 ms 10196 KB Output is correct
31 Correct 10 ms 10196 KB Output is correct
32 Correct 10 ms 10324 KB Output is correct
33 Correct 8 ms 10196 KB Output is correct
34 Correct 8 ms 10212 KB Output is correct
35 Correct 8 ms 10284 KB Output is correct
36 Correct 9 ms 10324 KB Output is correct
37 Correct 7 ms 10324 KB Output is correct
38 Correct 10 ms 10324 KB Output is correct
39 Correct 11 ms 10196 KB Output is correct
40 Correct 7 ms 10336 KB Output is correct
41 Correct 10 ms 10196 KB Output is correct
42 Correct 11 ms 10152 KB Output is correct
43 Correct 7 ms 10324 KB Output is correct
44 Correct 7 ms 10156 KB Output is correct

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9812 KB Output is correct
2 Correct 5 ms 9804 KB Output is correct
3 Correct 5 ms 9812 KB Output is correct
4 Correct 5 ms 9812 KB Output is correct
5 Correct 5 ms 9684 KB Output is correct
6 Correct 5 ms 9812 KB Output is correct
7 Correct 7 ms 9812 KB Output is correct
8 Correct 7 ms 9812 KB Output is correct
9 Correct 5 ms 9812 KB Output is correct
10 Correct 5 ms 9812 KB Output is correct
11 Correct 5 ms 9812 KB Output is correct
12 Correct 5 ms 9824 KB Output is correct
13 Correct 6 ms 9812 KB Output is correct
14 Correct 5 ms 9812 KB Output is correct
15 Correct 5 ms 9812 KB Output is correct
16 Correct 5 ms 9828 KB Output is correct
17 Correct 5 ms 9812 KB Output is correct
18 Correct 5 ms 9812 KB Output is correct
19 Correct 6 ms 9812 KB Output is correct
20 Correct 6 ms 9812 KB Output is correct
21 Correct 6 ms 9812 KB Output is correct
22 Correct 8 ms 9796 KB Output is correct
23 Correct 9 ms 10196 KB Output is correct
24 Correct 8 ms 10196 KB Output is correct
25 Correct 9 ms 10196 KB Output is correct
26 Correct 8 ms 10196 KB Output is correct
27 Correct 8 ms 10140 KB Output is correct
28 Correct 7 ms 10196 KB Output is correct
29 Correct 8 ms 10196 KB Output is correct
30 Correct 10 ms 10196 KB Output is correct
31 Correct 10 ms 10196 KB Output is correct
32 Correct 10 ms 10324 KB Output is correct
33 Correct 8 ms 10196 KB Output is correct
34 Correct 8 ms 10212 KB Output is correct
35 Correct 8 ms 10284 KB Output is correct
36 Correct 9 ms 10324 KB Output is correct
37 Correct 7 ms 10324 KB Output is correct
38 Correct 10 ms 10324 KB Output is correct
39 Correct 11 ms 10196 KB Output is correct
40 Correct 7 ms 10336 KB Output is correct
41 Correct 10 ms 10196 KB Output is correct
42 Correct 11 ms 10152 KB Output is correct
43 Correct 7 ms 10324 KB Output is correct
44 Correct 7 ms 10156 KB Output is correct
45 Correct 461 ms 59252 KB Output is correct
46 Correct 445 ms 58612 KB Output is correct
47 Correct 490 ms 57920 KB Output is correct
48 Correct 444 ms 59340 KB Output is correct
49 Correct 463 ms 57640 KB Output is correct
50 Correct 416 ms 57596 KB Output is correct
51 Correct 504 ms 57856 KB Output is correct
52 Correct 449 ms 58732 KB Output is correct
53 Correct 494 ms 58740 KB Output is correct
54 Correct 643 ms 69700 KB Output is correct
55 Correct 615 ms 65520 KB Output is correct
56 Correct 695 ms 63640 KB Output is correct
57 Correct 710 ms 62060 KB Output is correct
58 Correct 508 ms 66720 KB Output is correct
59 Correct 473 ms 66020 KB Output is correct
60 Correct 319 ms 77000 KB Output is correct
61 Correct 403 ms 59292 KB Output is correct
62 Incorrect 634 ms 70376 KB Output isn't correct
63 Halted 0 ms 0 KB -