답안 #496187

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
496187	2021-12-21T01:01:16 Z	model_code	Osumnjičeni (COCI21_osumnjiceni)	C++17	110 / 110	321 ms	25464 KB

Main

#include<bits/stdc++.h>

using namespace std;

typedef long long llint;
typedef pair <int, int> pi;

const int MAXN = 200005;
const int LOG = 18;

int n, q;
int lef[MAXN], rig[MAXN];
int par[MAXN][LOG];
set <pi> st;

bool can_insert (int ind) {
    if (st.empty()) return 1;

    auto it = st.lower_bound({lef[ind], 0});
    int nxt = it -> second;
    if (lef[ind] <= lef[nxt] && lef[nxt] <= rig[ind]) return 0;

    if (it != st.begin()) {
        it--;
        int prv = it -> second;
        if (lef[prv] <= lef[ind] && lef[ind] <= rig[prv]) return 0;
    }

    return 1;
}

void precompute () {
    int lim = 0;
    for (int i = 1; i <= n; i++) {
        if (lim < i) {
            st.clear();
            lim = i;
            st.insert({lef[i], i});
        }

        while (lim + 1 <= n && can_insert(lim + 1)) {
            lim++;
            st.insert({lef[lim], lim});
        }
        par[i][0] = lim + 1;

        st.erase({lef[i], i});
    }
    par[n + 1][0] = n + 1;

    for (int i = 1; i < LOG; i++) {
        for (int j = 1; j <= n + 1; j++) {
            par[j][i] = par[par[j][i - 1]][i - 1];
        }
    }
}

int upit (int a, int b) {
    int res = 0;
    for (int i = LOG - 1; i >= 0; i--) {
        if (par[a][i] <= b) {
            a = par[a][i];
            res += 1 << i;
        }
    }
    return res + 1;
}

int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> lef[i] >> rig[i];
    }
    precompute();
    cin >> q;
    for (int i = 1; i <= q; i++) {
        int a, b;
        cin >> a >> b;
        cout << upit(a, b) << '\n';
    }
    return 0;
}

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	86 ms	15256 KB	Output is correct
2	Correct	85 ms	14956 KB	Output is correct
3	Correct	76 ms	15072 KB	Output is correct
4	Correct	77 ms	15248 KB	Output is correct
5	Correct	82 ms	15828 KB	Output is correct
6	Correct	95 ms	14364 KB	Output is correct
7	Correct	78 ms	14856 KB	Output is correct
8	Correct	79 ms	14884 KB	Output is correct
9	Correct	104 ms	15300 KB	Output is correct
10	Correct	102 ms	14776 KB	Output is correct
11	Correct	247 ms	24680 KB	Output is correct
12	Correct	238 ms	23308 KB	Output is correct
13	Correct	227 ms	23120 KB	Output is correct
14	Correct	183 ms	20740 KB	Output is correct
15	Correct	189 ms	19068 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	75 ms	15508 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	716 KB	Output is correct
2	Correct	4 ms	716 KB	Output is correct
3	Correct	3 ms	724 KB	Output is correct
4	Correct	3 ms	716 KB	Output is correct
5	Correct	4 ms	716 KB	Output is correct
6	Correct	5 ms	716 KB	Output is correct
7	Correct	4 ms	716 KB	Output is correct
8	Correct	5 ms	716 KB	Output is correct
9	Correct	3 ms	716 KB	Output is correct
10	Correct	3 ms	716 KB	Output is correct
11	Correct	4 ms	972 KB	Output is correct
12	Correct	4 ms	844 KB	Output is correct
13	Correct	5 ms	844 KB	Output is correct
14	Correct	4 ms	824 KB	Output is correct
15	Correct	4 ms	716 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	3 ms	716 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	716 KB	Output is correct
2	Correct	4 ms	716 KB	Output is correct
3	Correct	3 ms	724 KB	Output is correct
4	Correct	3 ms	716 KB	Output is correct
5	Correct	4 ms	716 KB	Output is correct
6	Correct	5 ms	716 KB	Output is correct
7	Correct	4 ms	716 KB	Output is correct
8	Correct	5 ms	716 KB	Output is correct
9	Correct	3 ms	716 KB	Output is correct
10	Correct	3 ms	716 KB	Output is correct
11	Correct	4 ms	972 KB	Output is correct
12	Correct	4 ms	844 KB	Output is correct
13	Correct	5 ms	844 KB	Output is correct
14	Correct	4 ms	824 KB	Output is correct
15	Correct	4 ms	716 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	3 ms	716 KB	Output is correct
18	Correct	64 ms	1496 KB	Output is correct
19	Correct	58 ms	1404 KB	Output is correct
20	Correct	63 ms	1496 KB	Output is correct
21	Correct	57 ms	1440 KB	Output is correct
22	Correct	66 ms	1524 KB	Output is correct
23	Correct	66 ms	1524 KB	Output is correct
24	Correct	61 ms	1468 KB	Output is correct
25	Correct	63 ms	1536 KB	Output is correct
26	Correct	58 ms	1452 KB	Output is correct
27	Correct	68 ms	1292 KB	Output is correct
28	Correct	62 ms	1272 KB	Output is correct
29	Correct	50 ms	1276 KB	Output is correct
30	Correct	45 ms	1224 KB	Output is correct
31	Correct	50 ms	1096 KB	Output is correct
32	Correct	58 ms	1136 KB	Output is correct
33	Correct	1 ms	332 KB	Output is correct
34	Correct	71 ms	1580 KB	Output is correct

Subtask #4

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	84 ms	15940 KB	Output is correct
2	Correct	81 ms	15556 KB	Output is correct
3	Correct	77 ms	14584 KB	Output is correct
4	Correct	71 ms	14332 KB	Output is correct
5	Correct	80 ms	14788 KB	Output is correct
6	Correct	71 ms	14512 KB	Output is correct
7	Correct	76 ms	14420 KB	Output is correct
8	Correct	75 ms	14628 KB	Output is correct
9	Correct	82 ms	14364 KB	Output is correct
10	Correct	103 ms	15648 KB	Output is correct
11	Correct	215 ms	23184 KB	Output is correct
12	Correct	229 ms	25244 KB	Output is correct
13	Correct	217 ms	22992 KB	Output is correct
14	Correct	211 ms	19256 KB	Output is correct
15	Correct	189 ms	20932 KB	Output is correct
16	Correct	0 ms	344 KB	Output is correct
17	Correct	68 ms	14692 KB	Output is correct

Subtask #5

50.0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	86 ms	15256 KB	Output is correct
2	Correct	85 ms	14956 KB	Output is correct
3	Correct	76 ms	15072 KB	Output is correct
4	Correct	77 ms	15248 KB	Output is correct
5	Correct	82 ms	15828 KB	Output is correct
6	Correct	95 ms	14364 KB	Output is correct
7	Correct	78 ms	14856 KB	Output is correct
8	Correct	79 ms	14884 KB	Output is correct
9	Correct	104 ms	15300 KB	Output is correct
10	Correct	102 ms	14776 KB	Output is correct
11	Correct	247 ms	24680 KB	Output is correct
12	Correct	238 ms	23308 KB	Output is correct
13	Correct	227 ms	23120 KB	Output is correct
14	Correct	183 ms	20740 KB	Output is correct
15	Correct	189 ms	19068 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	75 ms	15508 KB	Output is correct
18	Correct	6 ms	716 KB	Output is correct
19	Correct	4 ms	716 KB	Output is correct
20	Correct	3 ms	724 KB	Output is correct
21	Correct	3 ms	716 KB	Output is correct
22	Correct	4 ms	716 KB	Output is correct
23	Correct	5 ms	716 KB	Output is correct
24	Correct	4 ms	716 KB	Output is correct
25	Correct	5 ms	716 KB	Output is correct
26	Correct	3 ms	716 KB	Output is correct
27	Correct	3 ms	716 KB	Output is correct
28	Correct	4 ms	972 KB	Output is correct
29	Correct	4 ms	844 KB	Output is correct
30	Correct	5 ms	844 KB	Output is correct
31	Correct	4 ms	824 KB	Output is correct
32	Correct	4 ms	716 KB	Output is correct
33	Correct	0 ms	204 KB	Output is correct
34	Correct	3 ms	716 KB	Output is correct
35	Correct	64 ms	1496 KB	Output is correct
36	Correct	58 ms	1404 KB	Output is correct
37	Correct	63 ms	1496 KB	Output is correct
38	Correct	57 ms	1440 KB	Output is correct
39	Correct	66 ms	1524 KB	Output is correct
40	Correct	66 ms	1524 KB	Output is correct
41	Correct	61 ms	1468 KB	Output is correct
42	Correct	63 ms	1536 KB	Output is correct
43	Correct	58 ms	1452 KB	Output is correct
44	Correct	68 ms	1292 KB	Output is correct
45	Correct	62 ms	1272 KB	Output is correct
46	Correct	50 ms	1276 KB	Output is correct
47	Correct	45 ms	1224 KB	Output is correct
48	Correct	50 ms	1096 KB	Output is correct
49	Correct	58 ms	1136 KB	Output is correct
50	Correct	1 ms	332 KB	Output is correct
51	Correct	71 ms	1580 KB	Output is correct
52	Correct	84 ms	15940 KB	Output is correct
53	Correct	81 ms	15556 KB	Output is correct
54	Correct	77 ms	14584 KB	Output is correct
55	Correct	71 ms	14332 KB	Output is correct
56	Correct	80 ms	14788 KB	Output is correct
57	Correct	71 ms	14512 KB	Output is correct
58	Correct	76 ms	14420 KB	Output is correct
59	Correct	75 ms	14628 KB	Output is correct
60	Correct	82 ms	14364 KB	Output is correct
61	Correct	103 ms	15648 KB	Output is correct
62	Correct	215 ms	23184 KB	Output is correct
63	Correct	229 ms	25244 KB	Output is correct
64	Correct	217 ms	22992 KB	Output is correct
65	Correct	211 ms	19256 KB	Output is correct
66	Correct	189 ms	20932 KB	Output is correct
67	Correct	0 ms	344 KB	Output is correct
68	Correct	68 ms	14692 KB	Output is correct
69	Correct	285 ms	16036 KB	Output is correct
70	Correct	258 ms	16812 KB	Output is correct
71	Correct	230 ms	15496 KB	Output is correct
72	Correct	316 ms	16308 KB	Output is correct
73	Correct	248 ms	16028 KB	Output is correct
74	Correct	272 ms	16964 KB	Output is correct
75	Correct	303 ms	15696 KB	Output is correct
76	Correct	298 ms	16920 KB	Output is correct
77	Correct	244 ms	15652 KB	Output is correct
78	Correct	256 ms	15864 KB	Output is correct
79	Correct	292 ms	25464 KB	Output is correct
80	Correct	274 ms	23652 KB	Output is correct
81	Correct	321 ms	23412 KB	Output is correct
82	Correct	258 ms	19900 KB	Output is correct
83	Correct	227 ms	19136 KB	Output is correct
84	Correct	1 ms	204 KB	Output is correct
85	Correct	134 ms	15996 KB	Output is correct