답안 #521497

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
521497	2022-02-02T09:07:52 Z	MilosMilutinovic	Osumnjičeni (COCI21_osumnjiceni)	C++14	110 / 110	444 ms	40544 KB

Main

#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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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