답안 #494829

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
494829	2021-12-16T18:34:42 Z	blue	Event Hopping 2 (JOI21_event2)	C++17	100 / 100	326 ms	43536 KB

event2

#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <cassert>
#include <algorithm>
using namespace std;

const int mx = 200'000;
const int INF = 1'000'000'001;

const int lg = 19;

using vi = vector<int>;
using pii = pair<int, int>;
#define sz(x) int(x.size())

int jmp[1+mx+1][1+lg];

int query(int L, int R) //
{
    // cerr << "\n\n";
    // cerr << "query: " << L << ' ' << R << '\n';
    int ans = 0;
    for(int e = lg; e >= 0; e--)
    {
        if(jmp[L][e] <= R)
        {
            ans += (1 << e);
            L = jmp[L][e];
            if(L >= R) return ans;
        }
    }
    // cerr << "returning " << ans << "\n";
    return ans;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N, K;
    cin >> N >> K;

    set<int> V;

    int L[1+N], R[1+N];
    for(int i = 1; i <= N; i++)
    {
        cin >> L[i] >> R[i];
        V.insert(L[i]);
        V.insert(R[i]);
    }

    map<int, int> mp;

    int ct = 0;
    for(int v: V) mp[v] = ++ct;
    // cerr << "normalized\n";

    // for(auto y: mp) cerr << y.first << " : " << y.second << '\n';

    for(int i = 1; i <= N; i++)
    {
        L[i] = mp[L[i]];
        R[i] = mp[R[i]];

        // cerr << L[i] << ' ' << R[i] << '\n';
    }
    // cerr << "\n\n";


    vi jmp_val(2+mx, 1+mx);
    jmp_val[mx+1] = mx+1;
    for(int i = 1; i <= N; i++) jmp_val[L[i]] = min(jmp_val[L[i]], R[i]);
    for(int p = mx; p >= 1; p--) jmp_val[p] = min(jmp_val[p], jmp_val[p+1]);

    for(int i = 1; i <= mx+1; i++)
        jmp[i][0] = jmp_val[i];

    for(int e = 1; e <= lg; e++)
    {
        for(int i = 1; i <= mx+1; i++)
        {
            jmp[i][e] = jmp[jmp[i][e-1]][e-1];
        }
    }

            // jmp[i][e] = jmp[ jmp[i][e-1] ][e-1];

    int max_events = query(1, mx);

    if(max_events < K)
    {
        cout << "-1\n";
        return 0;
    }

    // cerr << "max events = " << max_events << '\n';

    vi res;

    set<pii> events;
    events.insert({1, 1});
    events.insert({mx, mx});


    // for(int i = 1; i <= 20; i++) cerr << jmp_val[i] << ' ';
    // cerr << '\n';





    for(int i = 1; i <= N && sz(res) < K; i++)
    {
        auto y2 = events.lower_bound({L[i], R[i]});

        if(R[i] > y2->first) continue;

        auto y1 = y2;
        y1--;

        if(L[i] < y1->second) continue;

        int change = query(y1->second, L[i]) + query(R[i], y2->first) + 1 - query(y1->second, y2->first);
        if(max_events + change < K) continue;

        max_events += change;
        events.insert({L[i], R[i]});
        res.push_back(i);
    }

    for(int r: res) cout << r << '\n';
    // cout << '\n';
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	35 ms	16644 KB	Output is correct
2	Correct	35 ms	16716 KB	Output is correct
3	Correct	35 ms	16716 KB	Output is correct
4	Correct	197 ms	41600 KB	Output is correct
5	Correct	199 ms	43392 KB	Output is correct
6	Correct	197 ms	42976 KB	Output is correct
7	Correct	199 ms	42400 KB	Output is correct
8	Correct	217 ms	43536 KB	Output is correct
9	Correct	199 ms	43212 KB	Output is correct
10	Correct	198 ms	42972 KB	Output is correct
11	Correct	188 ms	42480 KB	Output is correct
12	Correct	187 ms	41448 KB	Output is correct
13	Correct	182 ms	41324 KB	Output is correct
14	Correct	178 ms	41196 KB	Output is correct
15	Correct	179 ms	40788 KB	Output is correct
16	Correct	159 ms	38936 KB	Output is correct
17	Correct	159 ms	38820 KB	Output is correct
18	Correct	165 ms	38820 KB	Output is correct
19	Correct	155 ms	38248 KB	Output is correct
20	Correct	152 ms	38296 KB	Output is correct
21	Correct	152 ms	38316 KB	Output is correct
22	Correct	155 ms	38260 KB	Output is correct
23	Correct	156 ms	38248 KB	Output is correct
24	Correct	159 ms	38184 KB	Output is correct
25	Correct	186 ms	38172 KB	Output is correct
26	Correct	180 ms	38224 KB	Output is correct
27	Correct	176 ms	38312 KB	Output is correct
28	Correct	148 ms	38304 KB	Output is correct
29	Correct	146 ms	38344 KB	Output is correct
30	Correct	154 ms	38216 KB	Output is correct
31	Correct	146 ms	38228 KB	Output is correct
32	Correct	162 ms	38172 KB	Output is correct
33	Correct	169 ms	38224 KB	Output is correct
34	Correct	174 ms	40108 KB	Output is correct
35	Correct	167 ms	39524 KB	Output is correct
36	Correct	160 ms	38856 KB	Output is correct
37	Correct	219 ms	41004 KB	Output is correct
38	Correct	195 ms	40904 KB	Output is correct
39	Correct	185 ms	40848 KB	Output is correct
40	Correct	182 ms	40668 KB	Output is correct
41	Correct	182 ms	40640 KB	Output is correct
42	Correct	147 ms	38152 KB	Output is correct
43	Correct	176 ms	40884 KB	Output is correct
44	Correct	180 ms	40828 KB	Output is correct
45	Correct	172 ms	40768 KB	Output is correct
46	Correct	176 ms	40540 KB	Output is correct

Subtask #2
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	34 ms	16716 KB	Output is correct
2	Correct	34 ms	16740 KB	Output is correct
3	Correct	37 ms	16716 KB	Output is correct
4	Correct	34 ms	16716 KB	Output is correct
5	Correct	33 ms	16716 KB	Output is correct
6	Correct	33 ms	16716 KB	Output is correct
7	Correct	34 ms	16716 KB	Output is correct
8	Correct	32 ms	16740 KB	Output is correct
9	Correct	35 ms	16720 KB	Output is correct
10	Correct	35 ms	16716 KB	Output is correct
11	Correct	33 ms	16716 KB	Output is correct
12	Correct	36 ms	16716 KB	Output is correct
13	Correct	37 ms	16716 KB	Output is correct
14	Correct	34 ms	16716 KB	Output is correct
15	Correct	34 ms	16716 KB	Output is correct
16	Correct	35 ms	16664 KB	Output is correct
17	Correct	32 ms	16716 KB	Output is correct
18	Correct	34 ms	16716 KB	Output is correct
19	Correct	33 ms	16716 KB	Output is correct
20	Correct	32 ms	16716 KB	Output is correct
21	Correct	33 ms	16648 KB	Output is correct
22	Correct	34 ms	16716 KB	Output is correct
23	Correct	34 ms	16716 KB	Output is correct
24	Correct	32 ms	16716 KB	Output is correct
25	Correct	33 ms	16716 KB	Output is correct
26	Correct	38 ms	16704 KB	Output is correct
27	Correct	34 ms	16756 KB	Output is correct

Subtask #3
31.0 / 31.0

#	결과	실행 시간	메모리	Grader output
1	Correct	34 ms	16716 KB	Output is correct
2	Correct	34 ms	16740 KB	Output is correct
3	Correct	37 ms	16716 KB	Output is correct
4	Correct	34 ms	16716 KB	Output is correct
5	Correct	33 ms	16716 KB	Output is correct
6	Correct	33 ms	16716 KB	Output is correct
7	Correct	34 ms	16716 KB	Output is correct
8	Correct	32 ms	16740 KB	Output is correct
9	Correct	35 ms	16720 KB	Output is correct
10	Correct	35 ms	16716 KB	Output is correct
11	Correct	33 ms	16716 KB	Output is correct
12	Correct	36 ms	16716 KB	Output is correct
13	Correct	37 ms	16716 KB	Output is correct
14	Correct	34 ms	16716 KB	Output is correct
15	Correct	34 ms	16716 KB	Output is correct
16	Correct	35 ms	16664 KB	Output is correct
17	Correct	32 ms	16716 KB	Output is correct
18	Correct	34 ms	16716 KB	Output is correct
19	Correct	33 ms	16716 KB	Output is correct
20	Correct	32 ms	16716 KB	Output is correct
21	Correct	33 ms	16648 KB	Output is correct
22	Correct	34 ms	16716 KB	Output is correct
23	Correct	34 ms	16716 KB	Output is correct
24	Correct	32 ms	16716 KB	Output is correct
25	Correct	33 ms	16716 KB	Output is correct
26	Correct	38 ms	16704 KB	Output is correct
27	Correct	34 ms	16756 KB	Output is correct
28	Correct	36 ms	17228 KB	Output is correct
29	Correct	36 ms	17256 KB	Output is correct
30	Correct	36 ms	17312 KB	Output is correct
31	Correct	37 ms	17316 KB	Output is correct
32	Correct	36 ms	17248 KB	Output is correct
33	Correct	39 ms	17228 KB	Output is correct
34	Correct	36 ms	17228 KB	Output is correct
35	Correct	37 ms	17468 KB	Output is correct
36	Correct	38 ms	17464 KB	Output is correct
37	Correct	36 ms	17332 KB	Output is correct
38	Correct	36 ms	17236 KB	Output is correct
39	Correct	37 ms	17432 KB	Output is correct
40	Correct	37 ms	17348 KB	Output is correct
41	Correct	36 ms	17348 KB	Output is correct
42	Correct	35 ms	17320 KB	Output is correct
43	Correct	38 ms	17340 KB	Output is correct
44	Correct	37 ms	17328 KB	Output is correct
45	Correct	37 ms	17348 KB	Output is correct
46	Correct	36 ms	17288 KB	Output is correct
47	Correct	37 ms	17228 KB	Output is correct
48	Correct	36 ms	17228 KB	Output is correct
49	Correct	38 ms	17228 KB	Output is correct
50	Correct	37 ms	17288 KB	Output is correct
51	Correct	39 ms	17228 KB	Output is correct
52	Correct	37 ms	17336 KB	Output is correct
53	Correct	36 ms	17228 KB	Output is correct
54	Correct	38 ms	17252 KB	Output is correct
55	Correct	36 ms	17184 KB	Output is correct
56	Correct	38 ms	17180 KB	Output is correct
57	Correct	35 ms	17192 KB	Output is correct
58	Correct	38 ms	17192 KB	Output is correct
59	Correct	35 ms	17228 KB	Output is correct
60	Correct	35 ms	17188 KB	Output is correct
61	Correct	38 ms	17188 KB	Output is correct
62	Correct	36 ms	17180 KB	Output is correct
63	Correct	36 ms	17184 KB	Output is correct
64	Correct	35 ms	16972 KB	Output is correct

Subtask #4
61.0 / 61.0

#	결과	실행 시간	메모리	Grader output
1	Correct	35 ms	16644 KB	Output is correct
2	Correct	35 ms	16716 KB	Output is correct
3	Correct	35 ms	16716 KB	Output is correct
4	Correct	197 ms	41600 KB	Output is correct
5	Correct	199 ms	43392 KB	Output is correct
6	Correct	197 ms	42976 KB	Output is correct
7	Correct	199 ms	42400 KB	Output is correct
8	Correct	217 ms	43536 KB	Output is correct
9	Correct	199 ms	43212 KB	Output is correct
10	Correct	198 ms	42972 KB	Output is correct
11	Correct	188 ms	42480 KB	Output is correct
12	Correct	187 ms	41448 KB	Output is correct
13	Correct	182 ms	41324 KB	Output is correct
14	Correct	178 ms	41196 KB	Output is correct
15	Correct	179 ms	40788 KB	Output is correct
16	Correct	159 ms	38936 KB	Output is correct
17	Correct	159 ms	38820 KB	Output is correct
18	Correct	165 ms	38820 KB	Output is correct
19	Correct	155 ms	38248 KB	Output is correct
20	Correct	152 ms	38296 KB	Output is correct
21	Correct	152 ms	38316 KB	Output is correct
22	Correct	155 ms	38260 KB	Output is correct
23	Correct	156 ms	38248 KB	Output is correct
24	Correct	159 ms	38184 KB	Output is correct
25	Correct	186 ms	38172 KB	Output is correct
26	Correct	180 ms	38224 KB	Output is correct
27	Correct	176 ms	38312 KB	Output is correct
28	Correct	148 ms	38304 KB	Output is correct
29	Correct	146 ms	38344 KB	Output is correct
30	Correct	154 ms	38216 KB	Output is correct
31	Correct	146 ms	38228 KB	Output is correct
32	Correct	162 ms	38172 KB	Output is correct
33	Correct	169 ms	38224 KB	Output is correct
34	Correct	174 ms	40108 KB	Output is correct
35	Correct	167 ms	39524 KB	Output is correct
36	Correct	160 ms	38856 KB	Output is correct
37	Correct	219 ms	41004 KB	Output is correct
38	Correct	195 ms	40904 KB	Output is correct
39	Correct	185 ms	40848 KB	Output is correct
40	Correct	182 ms	40668 KB	Output is correct
41	Correct	182 ms	40640 KB	Output is correct
42	Correct	147 ms	38152 KB	Output is correct
43	Correct	176 ms	40884 KB	Output is correct
44	Correct	180 ms	40828 KB	Output is correct
45	Correct	172 ms	40768 KB	Output is correct
46	Correct	176 ms	40540 KB	Output is correct
47	Correct	34 ms	16716 KB	Output is correct
48	Correct	34 ms	16740 KB	Output is correct
49	Correct	37 ms	16716 KB	Output is correct
50	Correct	34 ms	16716 KB	Output is correct
51	Correct	33 ms	16716 KB	Output is correct
52	Correct	33 ms	16716 KB	Output is correct
53	Correct	34 ms	16716 KB	Output is correct
54	Correct	32 ms	16740 KB	Output is correct
55	Correct	35 ms	16720 KB	Output is correct
56	Correct	35 ms	16716 KB	Output is correct
57	Correct	33 ms	16716 KB	Output is correct
58	Correct	36 ms	16716 KB	Output is correct
59	Correct	37 ms	16716 KB	Output is correct
60	Correct	34 ms	16716 KB	Output is correct
61	Correct	34 ms	16716 KB	Output is correct
62	Correct	35 ms	16664 KB	Output is correct
63	Correct	32 ms	16716 KB	Output is correct
64	Correct	34 ms	16716 KB	Output is correct
65	Correct	33 ms	16716 KB	Output is correct
66	Correct	32 ms	16716 KB	Output is correct
67	Correct	33 ms	16648 KB	Output is correct
68	Correct	34 ms	16716 KB	Output is correct
69	Correct	34 ms	16716 KB	Output is correct
70	Correct	32 ms	16716 KB	Output is correct
71	Correct	33 ms	16716 KB	Output is correct
72	Correct	38 ms	16704 KB	Output is correct
73	Correct	34 ms	16756 KB	Output is correct
74	Correct	36 ms	17228 KB	Output is correct
75	Correct	36 ms	17256 KB	Output is correct
76	Correct	36 ms	17312 KB	Output is correct
77	Correct	37 ms	17316 KB	Output is correct
78	Correct	36 ms	17248 KB	Output is correct
79	Correct	39 ms	17228 KB	Output is correct
80	Correct	36 ms	17228 KB	Output is correct
81	Correct	37 ms	17468 KB	Output is correct
82	Correct	38 ms	17464 KB	Output is correct
83	Correct	36 ms	17332 KB	Output is correct
84	Correct	36 ms	17236 KB	Output is correct
85	Correct	37 ms	17432 KB	Output is correct
86	Correct	37 ms	17348 KB	Output is correct
87	Correct	36 ms	17348 KB	Output is correct
88	Correct	35 ms	17320 KB	Output is correct
89	Correct	38 ms	17340 KB	Output is correct
90	Correct	37 ms	17328 KB	Output is correct
91	Correct	37 ms	17348 KB	Output is correct
92	Correct	36 ms	17288 KB	Output is correct
93	Correct	37 ms	17228 KB	Output is correct
94	Correct	36 ms	17228 KB	Output is correct
95	Correct	38 ms	17228 KB	Output is correct
96	Correct	37 ms	17288 KB	Output is correct
97	Correct	39 ms	17228 KB	Output is correct
98	Correct	37 ms	17336 KB	Output is correct
99	Correct	36 ms	17228 KB	Output is correct
100	Correct	38 ms	17252 KB	Output is correct
101	Correct	36 ms	17184 KB	Output is correct
102	Correct	38 ms	17180 KB	Output is correct
103	Correct	35 ms	17192 KB	Output is correct
104	Correct	38 ms	17192 KB	Output is correct
105	Correct	35 ms	17228 KB	Output is correct
106	Correct	35 ms	17188 KB	Output is correct
107	Correct	38 ms	17188 KB	Output is correct
108	Correct	36 ms	17180 KB	Output is correct
109	Correct	36 ms	17184 KB	Output is correct
110	Correct	35 ms	16972 KB	Output is correct
111	Correct	295 ms	38316 KB	Output is correct
112	Correct	284 ms	38216 KB	Output is correct
113	Correct	267 ms	38212 KB	Output is correct
114	Correct	297 ms	38180 KB	Output is correct
115	Correct	246 ms	38156 KB	Output is correct
116	Correct	312 ms	38216 KB	Output is correct
117	Correct	256 ms	38284 KB	Output is correct
118	Correct	280 ms	43464 KB	Output is correct
119	Correct	326 ms	42984 KB	Output is correct
120	Correct	299 ms	40736 KB	Output is correct
121	Correct	253 ms	38264 KB	Output is correct
122	Correct	276 ms	41412 KB	Output is correct
123	Correct	262 ms	41156 KB	Output is correct
124	Correct	248 ms	40804 KB	Output is correct
125	Correct	234 ms	38236 KB	Output is correct
126	Correct	262 ms	38896 KB	Output is correct
127	Correct	246 ms	38824 KB	Output is correct
128	Correct	248 ms	38816 KB	Output is correct
129	Correct	242 ms	38248 KB	Output is correct
130	Correct	261 ms	38344 KB	Output is correct
131	Correct	253 ms	38252 KB	Output is correct
132	Correct	284 ms	38316 KB	Output is correct
133	Correct	267 ms	38344 KB	Output is correct
134	Correct	253 ms	38168 KB	Output is correct
135	Correct	278 ms	38192 KB	Output is correct
136	Correct	293 ms	38160 KB	Output is correct
137	Correct	276 ms	38216 KB	Output is correct
138	Correct	283 ms	38156 KB	Output is correct
139	Correct	261 ms	38216 KB	Output is correct
140	Correct	278 ms	38328 KB	Output is correct
141	Correct	279 ms	38228 KB	Output is correct
142	Correct	171 ms	34516 KB	Output is correct
143	Correct	171 ms	34532 KB	Output is correct
144	Correct	172 ms	34496 KB	Output is correct
145	Correct	176 ms	34624 KB	Output is correct
146	Correct	159 ms	34384 KB	Output is correct
147	Correct	160 ms	34252 KB	Output is correct
148	Correct	167 ms	34268 KB	Output is correct
149	Correct	156 ms	34028 KB	Output is correct
150	Correct	153 ms	33976 KB	Output is correct
151	Correct	153 ms	33440 KB	Output is correct
152	Correct	113 ms	28864 KB	Output is correct
153	Correct	163 ms	34468 KB	Output is correct
154	Correct	165 ms	34456 KB	Output is correct
155	Correct	156 ms	34228 KB	Output is correct
156	Correct	160 ms	34140 KB	Output is correct
157	Correct	155 ms	34020 KB	Output is correct
158	Correct	156 ms	34048 KB	Output is correct
159	Correct	152 ms	33472 KB	Output is correct
160	Correct	148 ms	28896 KB	Output is correct
161	Correct	251 ms	36292 KB	Output is correct
162	Correct	240 ms	36176 KB	Output is correct
163	Correct	230 ms	36168 KB	Output is correct
164	Correct	245 ms	35972 KB	Output is correct
165	Correct	240 ms	36040 KB	Output is correct
166	Correct	147 ms	38152 KB	Output is correct
167	Correct	188 ms	40936 KB	Output is correct
168	Correct	191 ms	40780 KB	Output is correct
169	Correct	179 ms	40648 KB	Output is correct
170	Correct	189 ms	40596 KB	Output is correct
171	Correct	184 ms	40396 KB	Output is correct
172	Correct	194 ms	41068 KB	Output is correct
173	Correct	217 ms	31604 KB	Output is correct
174	Correct	213 ms	31692 KB	Output is correct
175	Correct	203 ms	31580 KB	Output is correct
176	Correct	203 ms	31052 KB	Output is correct

답안 #494829

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 1.0 / 1.0

Subtask #3 31.0 / 31.0

Subtask #4 61.0 / 61.0

Subtask #1
7.0 / 7.0

Subtask #2
1.0 / 1.0

Subtask #3
31.0 / 31.0

Subtask #4
61.0 / 61.0