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Submission #521497

# Submission time Handle Problem Language Result Execution time Memory
521497 2022-02-02T09:07:52 Z MilosMilutinovic Osumnjičeni (COCI21_osumnjiceni) C++14
110 / 110
 444 ms 40544 KB 
#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n;
  cin >> n;
  vector<int> l(n), r(n);
  vector<int> cs;
  for (int i = 0; i < n; i++) {
    cin >> l[i] >> r[i];
  }
  multiset<pair<int, int>> segs;
  auto Check = [&](int L, int R) {
    auto it = segs.lower_bound({L, -1});
    if (it != segs.end()) {
      if (it->first <= R) {
        return false;
      }
    }
    if (it != segs.begin()) {
      it = prev(it);
      if (it->second >= L) {
        return false;
      }
    }
    return true;
  };
  const int L = 20;
  vector<vector<int>> jump(n + 1, vector<int>(L, n));
  int ptr = n - 1;
  for (int i = n - 1; i >= 0; i--) {
    while (!Check(l[i], r[i])) {
      segs.erase(segs.find({l[ptr], r[ptr]}));
      ptr--;
    }
    segs.insert({l[i], r[i]});
    jump[i][0] = ptr;
  }
  for (int j = 1; j < L; j++) {
    for (int i = 0; i < n; i++) {
      if (jump[i][j - 1] < n) {
        jump[i][j] = jump[jump[i][j - 1] + 1][j - 1];
      }
    }
  }
  int q;
  cin >> q;
  while (q--) {
    int l, r;
    cin >> l >> r;
    --l; --r;
    int ans = 0;
    for (int j = L - 1; j >= 0; j--) {
      if (jump[l][j] <= r) {
        l = jump[l][j] + 1;
        ans += 1 << j;
      }
      if (l >= n) {
        break;
      }
    }
    cout << ans + (l <= r ? 1 : 0) << '\n';
  }
  return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 24236 KB Output is correct
2 Correct 102 ms 23828 KB Output is correct
3 Correct 100 ms 23816 KB Output is correct
4 Correct 103 ms 24260 KB Output is correct
5 Correct 100 ms 25180 KB Output is correct
6 Correct 86 ms 22988 KB Output is correct
7 Correct 91 ms 23388 KB Output is correct
8 Correct 123 ms 23656 KB Output is correct
9 Correct 106 ms 24084 KB Output is correct
10 Correct 103 ms 23404 KB Output is correct
11 Correct 169 ms 33876 KB Output is correct
12 Correct 160 ms 31840 KB Output is correct
13 Correct 176 ms 31736 KB Output is correct
14 Correct 180 ms 30080 KB Output is correct
15 Correct 181 ms 28108 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 103 ms 24460 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 844 KB Output is correct
2 Correct 5 ms 844 KB Output is correct
3 Correct 4 ms 844 KB Output is correct
4 Correct 4 ms 932 KB Output is correct
5 Correct 4 ms 844 KB Output is correct
6 Correct 4 ms 844 KB Output is correct
7 Correct 5 ms 976 KB Output is correct
8 Correct 4 ms 844 KB Output is correct
9 Correct 4 ms 856 KB Output is correct
10 Correct 4 ms 856 KB Output is correct
11 Correct 4 ms 1124 KB Output is correct
12 Correct 4 ms 1100 KB Output is correct
13 Correct 4 ms 1100 KB Output is correct
14 Correct 5 ms 1028 KB Output is correct
15 Correct 4 ms 1000 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 6 ms 844 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 844 KB Output is correct
2 Correct 5 ms 844 KB Output is correct
3 Correct 4 ms 844 KB Output is correct
4 Correct 4 ms 932 KB Output is correct
5 Correct 4 ms 844 KB Output is correct
6 Correct 4 ms 844 KB Output is correct
7 Correct 5 ms 976 KB Output is correct
8 Correct 4 ms 844 KB Output is correct
9 Correct 4 ms 856 KB Output is correct
10 Correct 4 ms 856 KB Output is correct
11 Correct 4 ms 1124 KB Output is correct
12 Correct 4 ms 1100 KB Output is correct
13 Correct 4 ms 1100 KB Output is correct
14 Correct 5 ms 1028 KB Output is correct
15 Correct 4 ms 1000 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 6 ms 844 KB Output is correct
18 Correct 88 ms 1684 KB Output is correct
19 Correct 66 ms 1660 KB Output is correct
20 Correct 77 ms 1704 KB Output is correct
21 Correct 71 ms 1580 KB Output is correct
22 Correct 74 ms 1724 KB Output is correct
23 Correct 68 ms 1604 KB Output is correct
24 Correct 70 ms 1684 KB Output is correct
25 Correct 72 ms 1684 KB Output is correct
26 Correct 69 ms 1668 KB Output is correct
27 Correct 67 ms 1496 KB Output is correct
28 Correct 63 ms 1468 KB Output is correct
29 Correct 54 ms 1476 KB Output is correct
30 Correct 59 ms 1568 KB Output is correct
31 Correct 50 ms 1272 KB Output is correct
32 Correct 67 ms 1320 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 51 ms 1796 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 103 ms 25312 KB Output is correct
2 Correct 104 ms 24816 KB Output is correct
3 Correct 103 ms 23136 KB Output is correct
4 Correct 101 ms 22968 KB Output is correct
5 Correct 96 ms 23492 KB Output is correct
6 Correct 87 ms 23180 KB Output is correct
7 Correct 95 ms 22996 KB Output is correct
8 Correct 121 ms 23108 KB Output is correct
9 Correct 96 ms 22852 KB Output is correct
10 Correct 123 ms 24772 KB Output is correct
11 Correct 162 ms 31604 KB Output is correct
12 Correct 175 ms 34700 KB Output is correct
13 Correct 192 ms 31660 KB Output is correct
14 Correct 167 ms 27972 KB Output is correct
15 Correct 208 ms 30420 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 92 ms 23436 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 24236 KB Output is correct
2 Correct 102 ms 23828 KB Output is correct
3 Correct 100 ms 23816 KB Output is correct
4 Correct 103 ms 24260 KB Output is correct
5 Correct 100 ms 25180 KB Output is correct
6 Correct 86 ms 22988 KB Output is correct
7 Correct 91 ms 23388 KB Output is correct
8 Correct 123 ms 23656 KB Output is correct
9 Correct 106 ms 24084 KB Output is correct
10 Correct 103 ms 23404 KB Output is correct
11 Correct 169 ms 33876 KB Output is correct
12 Correct 160 ms 31840 KB Output is correct
13 Correct 176 ms 31736 KB Output is correct
14 Correct 180 ms 30080 KB Output is correct
15 Correct 181 ms 28108 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 103 ms 24460 KB Output is correct
18 Correct 4 ms 844 KB Output is correct
19 Correct 5 ms 844 KB Output is correct
20 Correct 4 ms 844 KB Output is correct
21 Correct 4 ms 932 KB Output is correct
22 Correct 4 ms 844 KB Output is correct
23 Correct 4 ms 844 KB Output is correct
24 Correct 5 ms 976 KB Output is correct
25 Correct 4 ms 844 KB Output is correct
26 Correct 4 ms 856 KB Output is correct
27 Correct 4 ms 856 KB Output is correct
28 Correct 4 ms 1124 KB Output is correct
29 Correct 4 ms 1100 KB Output is correct
30 Correct 4 ms 1100 KB Output is correct
31 Correct 5 ms 1028 KB Output is correct
32 Correct 4 ms 1000 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 6 ms 844 KB Output is correct
35 Correct 88 ms 1684 KB Output is correct
36 Correct 66 ms 1660 KB Output is correct
37 Correct 77 ms 1704 KB Output is correct
38 Correct 71 ms 1580 KB Output is correct
39 Correct 74 ms 1724 KB Output is correct
40 Correct 68 ms 1604 KB Output is correct
41 Correct 70 ms 1684 KB Output is correct
42 Correct 72 ms 1684 KB Output is correct
43 Correct 69 ms 1668 KB Output is correct
44 Correct 67 ms 1496 KB Output is correct
45 Correct 63 ms 1468 KB Output is correct
46 Correct 54 ms 1476 KB Output is correct
47 Correct 59 ms 1568 KB Output is correct
48 Correct 50 ms 1272 KB Output is correct
49 Correct 67 ms 1320 KB Output is correct
50 Correct 0 ms 204 KB Output is correct
51 Correct 51 ms 1796 KB Output is correct
52 Correct 103 ms 25312 KB Output is correct
53 Correct 104 ms 24816 KB Output is correct
54 Correct 103 ms 23136 KB Output is correct
55 Correct 101 ms 22968 KB Output is correct
56 Correct 96 ms 23492 KB Output is correct
57 Correct 87 ms 23180 KB Output is correct
58 Correct 95 ms 22996 KB Output is correct
59 Correct 121 ms 23108 KB Output is correct
60 Correct 96 ms 22852 KB Output is correct
61 Correct 123 ms 24772 KB Output is correct
62 Correct 162 ms 31604 KB Output is correct
63 Correct 175 ms 34700 KB Output is correct
64 Correct 192 ms 31660 KB Output is correct
65 Correct 167 ms 27972 KB Output is correct
66 Correct 208 ms 30420 KB Output is correct
67 Correct 1 ms 204 KB Output is correct
68 Correct 92 ms 23436 KB Output is correct
69 Correct 383 ms 24632 KB Output is correct
70 Correct 444 ms 25976 KB Output is correct
71 Correct 365 ms 29940 KB Output is correct
72 Correct 413 ms 31404 KB Output is correct
73 Correct 397 ms 30804 KB Output is correct
74 Correct 402 ms 32484 KB Output is correct
75 Correct 388 ms 30232 KB Output is correct
76 Correct 391 ms 32596 KB Output is correct
77 Correct 365 ms 30148 KB Output is correct
78 Correct 374 ms 30620 KB Output is correct
79 Correct 260 ms 40544 KB Output is correct
80 Correct 271 ms 37568 KB Output is correct
81 Correct 301 ms 37404 KB Output is correct
82 Correct 265 ms 34556 KB Output is correct
83 Correct 292 ms 33172 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 174 ms 30140 KB Output is correct