oj.uz

답안 #807537

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
807537 2023-08-04T19:07:12 Z dong_liu Passport (JOI23_passport) C++17
100 / 100
 989 ms 92508 KB 
#include "bits/stdc++.h"
using namespace std;

#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define F0R(i, a) FOR(i, 0, a)
#define ROF(i, a, b) for (int i = (b)-1; i >= (a); i--)
#define R0F(i, a) ROF(i, 0, a)

#define ar array
#define all(v) (v).begin(), (v).end()
#define sz(v) static_cast<int>(v.size())
typedef vector<int> vi;
typedef long long ll;

const int N = 2e5, N_ = 1 << 18;

int n_;
vector<pair<int, int>> g[N_ * 2 + N];

vi getSegs(int l, int r) {
  vi v;
  for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1) {
    if (l & 1) v.push_back(l++);
    if (~r & 1) v.push_back(r--);
  }
  return v;
}

int32_t main() {
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  cin.exceptions(cin.failbit);
  int n;
  cin >> n;
  n_ = 1;
  while (n_ < n) n_ <<= 1;
  F0R(i, n) {
    int l, r;
    cin >> l >> r, l--, r--;
    g[n_ * 2 + i].push_back({n_ + i, 1});
    for (int v : getSegs(l, r)) g[v].push_back({n_ * 2 + i, 0});
  }
  FOR(i, 1, n_) {
    g[i << 1 | 0].push_back({i, 0});
    g[i << 1 | 1].push_back({i, 0});
  }
  static int d1[N_ * 2 + N], dn[N_ * 2 + N], d[N_ * 2 + N];
  FOR(i, 1, n_ * 2 + n)
  d1[i] = dn[i] = d[i] = N_;
  priority_queue<pair<int, int>> pq;
  pq.push({-(d1[n_ + 0] = 0), n_ + 0});
  while (sz(pq)) {
    auto [d_, i] = pq.top();
    pq.pop();
    d_ *= -1;
    if (d_ != d1[i]) continue;
    for (auto [j, w] : g[i])
      if (d1[i] + w < d1[j]) pq.push({-(d1[j] = d1[i] + w), j});
  }
  pq.push({-(dn[n_ + n - 1] = 0), n_ + n - 1});
  while (sz(pq)) {
    auto [d_, i] = pq.top();
    pq.pop();
    d_ *= -1;
    if (d_ != dn[i]) continue;
    for (auto [j, w] : g[i])
      if (dn[i] + w < dn[j]) pq.push({-(dn[j] = dn[i] + w), j});
  }
  FOR(i, 1, n_ * 2 + n) {
    d[i] = min(d[i], d1[i] + dn[i]);
    pq.push({-d[i], i});
  }
  while (sz(pq)) {
    auto [d_, i] = pq.top();
    pq.pop();
    d_ *= -1;
    if (d_ != d[i]) continue;
    for (auto [j, w] : g[i])
      if (d[i] + w < d[j]) pq.push({-(d[j] = d[i] + w), j});
  }
  int q;
  cin >> q;
  F0R(h, q) {
    int i;
    cin >> i, i--;
    cout << (d[n_ + i] == N_ ? -1 : d[n_ + i]) << '\n';
  }
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 17236 KB Output is correct
2 Correct 10 ms 17252 KB Output is correct
3 Correct 9 ms 17344 KB Output is correct
4 Correct 847 ms 83040 KB Output is correct
5 Correct 476 ms 65336 KB Output is correct
6 Correct 237 ms 61124 KB Output is correct
7 Correct 366 ms 75188 KB Output is correct
8 Correct 219 ms 74880 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 17344 KB Output is correct
2 Correct 11 ms 17312 KB Output is correct
3 Correct 8 ms 17360 KB Output is correct
4 Correct 11 ms 17236 KB Output is correct
5 Correct 9 ms 17236 KB Output is correct
6 Correct 12 ms 17236 KB Output is correct
7 Correct 8 ms 17328 KB Output is correct
8 Correct 10 ms 17244 KB Output is correct
9 Correct 10 ms 17336 KB Output is correct
10 Correct 9 ms 17264 KB Output is correct
11 Correct 8 ms 17336 KB Output is correct
12 Correct 10 ms 17364 KB Output is correct
13 Correct 10 ms 17468 KB Output is correct
14 Correct 10 ms 17460 KB Output is correct
15 Correct 9 ms 17428 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 17344 KB Output is correct
2 Correct 11 ms 17312 KB Output is correct
3 Correct 8 ms 17360 KB Output is correct
4 Correct 11 ms 17236 KB Output is correct
5 Correct 9 ms 17236 KB Output is correct
6 Correct 12 ms 17236 KB Output is correct
7 Correct 8 ms 17328 KB Output is correct
8 Correct 10 ms 17244 KB Output is correct
9 Correct 10 ms 17336 KB Output is correct
10 Correct 9 ms 17264 KB Output is correct
11 Correct 8 ms 17336 KB Output is correct
12 Correct 10 ms 17364 KB Output is correct
13 Correct 10 ms 17468 KB Output is correct
14 Correct 10 ms 17460 KB Output is correct
15 Correct 9 ms 17428 KB Output is correct
16 Correct 13 ms 18128 KB Output is correct
17 Correct 16 ms 18004 KB Output is correct
18 Correct 15 ms 18208 KB Output is correct
19 Correct 14 ms 18252 KB Output is correct
20 Correct 12 ms 17992 KB Output is correct
21 Correct 16 ms 18004 KB Output is correct
22 Correct 12 ms 18260 KB Output is correct
23 Correct 15 ms 18132 KB Output is correct
24 Correct 16 ms 18120 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 17344 KB Output is correct
2 Correct 11 ms 17312 KB Output is correct
3 Correct 8 ms 17360 KB Output is correct
4 Correct 11 ms 17236 KB Output is correct
5 Correct 9 ms 17236 KB Output is correct
6 Correct 12 ms 17236 KB Output is correct
7 Correct 8 ms 17328 KB Output is correct
8 Correct 10 ms 17244 KB Output is correct
9 Correct 10 ms 17336 KB Output is correct
10 Correct 9 ms 17264 KB Output is correct
11 Correct 8 ms 17336 KB Output is correct
12 Correct 10 ms 17364 KB Output is correct
13 Correct 10 ms 17468 KB Output is correct
14 Correct 10 ms 17460 KB Output is correct
15 Correct 9 ms 17428 KB Output is correct
16 Correct 13 ms 18128 KB Output is correct
17 Correct 16 ms 18004 KB Output is correct
18 Correct 15 ms 18208 KB Output is correct
19 Correct 14 ms 18252 KB Output is correct
20 Correct 12 ms 17992 KB Output is correct
21 Correct 16 ms 18004 KB Output is correct
22 Correct 12 ms 18260 KB Output is correct
23 Correct 15 ms 18132 KB Output is correct
24 Correct 16 ms 18120 KB Output is correct
25 Correct 8 ms 17356 KB Output is correct
26 Correct 9 ms 17236 KB Output is correct
27 Correct 13 ms 18124 KB Output is correct
28 Correct 15 ms 18056 KB Output is correct
29 Correct 13 ms 18004 KB Output is correct
30 Correct 12 ms 18132 KB Output is correct
31 Correct 16 ms 18132 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 17236 KB Output is correct
2 Correct 10 ms 17252 KB Output is correct
3 Correct 9 ms 17344 KB Output is correct
4 Correct 847 ms 83040 KB Output is correct
5 Correct 476 ms 65336 KB Output is correct
6 Correct 237 ms 61124 KB Output is correct
7 Correct 366 ms 75188 KB Output is correct
8 Correct 219 ms 74880 KB Output is correct
9 Correct 11 ms 17344 KB Output is correct
10 Correct 11 ms 17312 KB Output is correct
11 Correct 8 ms 17360 KB Output is correct
12 Correct 11 ms 17236 KB Output is correct
13 Correct 9 ms 17236 KB Output is correct
14 Correct 12 ms 17236 KB Output is correct
15 Correct 8 ms 17328 KB Output is correct
16 Correct 10 ms 17244 KB Output is correct
17 Correct 10 ms 17336 KB Output is correct
18 Correct 9 ms 17264 KB Output is correct
19 Correct 8 ms 17336 KB Output is correct
20 Correct 10 ms 17364 KB Output is correct
21 Correct 10 ms 17468 KB Output is correct
22 Correct 10 ms 17460 KB Output is correct
23 Correct 9 ms 17428 KB Output is correct
24 Correct 13 ms 18128 KB Output is correct
25 Correct 16 ms 18004 KB Output is correct
26 Correct 15 ms 18208 KB Output is correct
27 Correct 14 ms 18252 KB Output is correct
28 Correct 12 ms 17992 KB Output is correct
29 Correct 16 ms 18004 KB Output is correct
30 Correct 12 ms 18260 KB Output is correct
31 Correct 15 ms 18132 KB Output is correct
32 Correct 16 ms 18120 KB Output is correct
33 Correct 8 ms 17356 KB Output is correct
34 Correct 9 ms 17236 KB Output is correct
35 Correct 13 ms 18124 KB Output is correct
36 Correct 15 ms 18056 KB Output is correct
37 Correct 13 ms 18004 KB Output is correct
38 Correct 12 ms 18132 KB Output is correct
39 Correct 16 ms 18132 KB Output is correct
40 Correct 989 ms 84272 KB Output is correct
41 Correct 509 ms 65304 KB Output is correct
42 Correct 597 ms 92508 KB Output is correct
43 Correct 643 ms 92240 KB Output is correct
44 Correct 242 ms 61068 KB Output is correct
45 Correct 323 ms 67000 KB Output is correct
46 Correct 181 ms 40128 KB Output is correct
47 Correct 534 ms 73252 KB Output is correct
48 Correct 416 ms 77056 KB Output is correct