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답안 #217531

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
217531 2020-03-30T07:26:53 Z extraterrestrial 별자리 3 (JOI20_constellation3) C++14
100 / 100
 688 ms 50424 KB 
#include <bits/stdc++.h>
typedef long long ll;
typedef long double ld;
using namespace std;
#define F first
#define S second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define SZ(x) (int)(x).size()
#define int ll

const int N = 2e5 + 10;
int p[N], l[N], r[N], sz[N];

void init(int n) {
  for (int i = 1; i <= n; i++) {
    p[i] = l[i] = r[i] = i;
    sz[i] = 1;
  }
}

int find(int v) {
  return p[v] == v ? v : p[v] = find(p[v]);
}

void merge(int a, int b) {
  a = find(a), b = find(b);
  if (a == b) {
    return;
  }
  if (sz[a] < sz[b]) {
    swap(a, b);
  }
  sz[a] += sz[b];
  p[b] = a;
  l[a] = min(l[a], l[b]);
  r[a] = max(r[a], r[b]);
}

int t[4 * N], f[4 * N];

void push(int v) {
  t[2 * v] += f[v];
  t[2 * v + 1] += f[v];
  f[2 * v] += f[v];
  f[2 * v + 1] += f[v];
  f[v] = 0;
}

void update(int v, int l, int r, int a, int b, int delta) {
  if (l > b || r < a) {
    return;
  }
  if (l >= a && r <= b) {
    t[v] += delta;
    f[v] += delta;
    return;
  }
  push(v);
  int mid = (l + r) / 2;
  update(2 * v, l, mid, a, b, delta);
  update(2 * v + 1, mid + 1, r, a, b, delta);
  t[v] = max(t[2 * v], t[2 * v + 1]);
}

int get_max(int v, int l, int r, int a, int b) {
  if (l > b || r < a) {
    return 0;
  }
  if (l >= a && r <= b) {
    return t[v];
  }
  push(v);
  int mid = (l + r) / 2;
  return max(get_max(2 * v, l, mid, a, b), get_max(2 * v + 1, mid + 1, r, a, b));
}

vector<int> add[N];
vector<pair<int, int>> have[N], kek[N];
bool active[N];

signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    int x;
    cin >> x;
    add[x + 1].pb(i);
  }
  int m;
  cin >> m;
  int all = 0;
  for (int i = 1; i <= m; i++) {
    int x, y, c;
    cin >> x >> y >> c;
    all += c;
    have[x].pb({y, c});
  }
  for (int i = 1; i <= n; i++) {
    sort(all(have[i]));
    int prv = 0;
    for (auto it : have[i]) {
      if (it.S > prv) {
        kek[it.F].pb({i, it.S - prv});
        prv = it.S;
      }
    }    
  }
  init(n);
  for (int i = 1; i <= n; i++) {
    for (int x : add[i]) {
      int mx_l = get_max(1, 1, n, l[find(x - 1)], r[find(x - 1)]),
      mx_r = get_max(1, 1, n, l[find(x + 1)], r[find(x + 1)]);
      if (active[x - 1]) {
        update(1, 1, n, l[find(x - 1)], r[find(x - 1)], mx_r);
        merge(x - 1, x);
      }
      if (active[x + 1]) {
        update(1, 1, n, l[find(x + 1)], r[find(x + 1)], mx_l);
        merge(x, x + 1);
      }
      update(1, 1, n, x, x, mx_l + mx_r);
      active[x] = true;
    }
    for (auto it : kek[i]) {
      update(1, 1, n, it.F, it.F, it.S);
    }
  }
  int sum = 0;
  for (int i = 1; i <= n; i++) {
    if (find(i) == i) {
      sum += get_max(1, 1, n, l[i], r[i]);
    }
  }
  cout << all - sum << '\n';
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 14464 KB Output is correct
2 Correct 13 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 13 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 13 ms 14464 KB Output is correct
7 Correct 13 ms 14592 KB Output is correct
8 Correct 13 ms 14592 KB Output is correct
9 Correct 13 ms 14464 KB Output is correct
10 Correct 13 ms 14592 KB Output is correct
11 Correct 16 ms 14464 KB Output is correct
12 Correct 13 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 16 ms 14464 KB Output is correct
15 Correct 22 ms 14592 KB Output is correct
16 Correct 13 ms 14592 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14464 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 18 ms 14464 KB Output is correct
21 Correct 14 ms 14592 KB Output is correct
22 Correct 22 ms 14464 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 14464 KB Output is correct
2 Correct 13 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 13 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 13 ms 14464 KB Output is correct
7 Correct 13 ms 14592 KB Output is correct
8 Correct 13 ms 14592 KB Output is correct
9 Correct 13 ms 14464 KB Output is correct
10 Correct 13 ms 14592 KB Output is correct
11 Correct 16 ms 14464 KB Output is correct
12 Correct 13 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 16 ms 14464 KB Output is correct
15 Correct 22 ms 14592 KB Output is correct
16 Correct 13 ms 14592 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14464 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 18 ms 14464 KB Output is correct
21 Correct 14 ms 14592 KB Output is correct
22 Correct 22 ms 14464 KB Output is correct
23 Correct 16 ms 14720 KB Output is correct
24 Correct 16 ms 14728 KB Output is correct
25 Correct 15 ms 14720 KB Output is correct
26 Correct 16 ms 14720 KB Output is correct
27 Correct 16 ms 14720 KB Output is correct
28 Correct 16 ms 14720 KB Output is correct
29 Correct 16 ms 14720 KB Output is correct
30 Correct 16 ms 14848 KB Output is correct
31 Correct 16 ms 14720 KB Output is correct
32 Correct 15 ms 14772 KB Output is correct
33 Correct 15 ms 14848 KB Output is correct
34 Correct 16 ms 14848 KB Output is correct
35 Correct 15 ms 14848 KB Output is correct
36 Correct 15 ms 14720 KB Output is correct
37 Correct 16 ms 14768 KB Output is correct
38 Correct 26 ms 14848 KB Output is correct
39 Correct 15 ms 14720 KB Output is correct
40 Correct 15 ms 14720 KB Output is correct
41 Correct 15 ms 14720 KB Output is correct
42 Correct 15 ms 14720 KB Output is correct
43 Correct 16 ms 14848 KB Output is correct
44 Correct 16 ms 14724 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 14464 KB Output is correct
2 Correct 13 ms 14464 KB Output is correct
3 Correct 13 ms 14464 KB Output is correct
4 Correct 13 ms 14464 KB Output is correct
5 Correct 13 ms 14464 KB Output is correct
6 Correct 13 ms 14464 KB Output is correct
7 Correct 13 ms 14592 KB Output is correct
8 Correct 13 ms 14592 KB Output is correct
9 Correct 13 ms 14464 KB Output is correct
10 Correct 13 ms 14592 KB Output is correct
11 Correct 16 ms 14464 KB Output is correct
12 Correct 13 ms 14464 KB Output is correct
13 Correct 13 ms 14464 KB Output is correct
14 Correct 16 ms 14464 KB Output is correct
15 Correct 22 ms 14592 KB Output is correct
16 Correct 13 ms 14592 KB Output is correct
17 Correct 13 ms 14464 KB Output is correct
18 Correct 13 ms 14464 KB Output is correct
19 Correct 13 ms 14464 KB Output is correct
20 Correct 18 ms 14464 KB Output is correct
21 Correct 14 ms 14592 KB Output is correct
22 Correct 22 ms 14464 KB Output is correct
23 Correct 16 ms 14720 KB Output is correct
24 Correct 16 ms 14728 KB Output is correct
25 Correct 15 ms 14720 KB Output is correct
26 Correct 16 ms 14720 KB Output is correct
27 Correct 16 ms 14720 KB Output is correct
28 Correct 16 ms 14720 KB Output is correct
29 Correct 16 ms 14720 KB Output is correct
30 Correct 16 ms 14848 KB Output is correct
31 Correct 16 ms 14720 KB Output is correct
32 Correct 15 ms 14772 KB Output is correct
33 Correct 15 ms 14848 KB Output is correct
34 Correct 16 ms 14848 KB Output is correct
35 Correct 15 ms 14848 KB Output is correct
36 Correct 15 ms 14720 KB Output is correct
37 Correct 16 ms 14768 KB Output is correct
38 Correct 26 ms 14848 KB Output is correct
39 Correct 15 ms 14720 KB Output is correct
40 Correct 15 ms 14720 KB Output is correct
41 Correct 15 ms 14720 KB Output is correct
42 Correct 15 ms 14720 KB Output is correct
43 Correct 16 ms 14848 KB Output is correct
44 Correct 16 ms 14724 KB Output is correct
45 Correct 636 ms 48120 KB Output is correct
46 Correct 639 ms 47864 KB Output is correct
47 Correct 636 ms 48120 KB Output is correct
48 Correct 688 ms 47992 KB Output is correct
49 Correct 621 ms 47736 KB Output is correct
50 Correct 582 ms 47608 KB Output is correct
51 Correct 625 ms 47736 KB Output is correct
52 Correct 649 ms 48248 KB Output is correct
53 Correct 637 ms 47984 KB Output is correct
54 Correct 508 ms 50424 KB Output is correct
55 Correct 511 ms 50168 KB Output is correct
56 Correct 522 ms 49912 KB Output is correct
57 Correct 491 ms 49784 KB Output is correct
58 Correct 471 ms 45560 KB Output is correct
59 Correct 468 ms 45688 KB Output is correct
60 Correct 335 ms 49272 KB Output is correct
61 Correct 439 ms 45672 KB Output is correct
62 Correct 532 ms 48760 KB Output is correct
63 Correct 433 ms 45524 KB Output is correct
64 Correct 432 ms 45296 KB Output is correct
65 Correct 547 ms 48524 KB Output is correct
66 Correct 440 ms 45284 KB Output is correct