oj.uz

답안 #398729

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
398729 2021-05-04T18:51:48 Z 4fecta Event Hopping 2 (JOI21_event2) C++17
100 / 100
 1234 ms 62696 KB 
#include <bits/stdc++.h>

using namespace std;
#define ll long long
#define int ll
#define ld long double
#define pii pair<int, int>
#define f first
#define s second
#define boost() cin.tie(0), cin.sync_with_stdio(0)

const int MN = 200005, LOG = 19;

int n, k, bl[MN][LOG];
pii a[MN];
vector<int> xs, ls[MN];
map<int, int> mp;

int lift(int cur, int k) {
    for (int i = LOG - 1; i >= 0; i--) if (k - (1 << i) >= 0) cur = bl[cur][i], k -= 1 << i;
    return cur;
}

int count(int l, int r) {
    int lo = 0, hi = n, mid;
    while (lo < hi) {
        mid = (lo + hi + 1) >> 1;
        if (lift(r, mid) >= l) lo = mid;
        else hi = mid - 1;
    }
    return lo;
}

int32_t main() {
    boost();

    cin >> n >> k;
    for (int i = 1; i <= n; i++) {
        cin >> a[i].f >> a[i].s;
        xs.push_back(a[i].f);
        xs.push_back(a[i].s);
    }
    sort(xs.begin(), xs.end());
    xs.erase(unique(xs.begin(), xs.end()), xs.end());
    for (int i = 0; i < xs.size(); i++) mp[xs[i]] = i + 1;
    for (int i = 1; i <= n; i++) a[i].f = mp[a[i].f], a[i].s = mp[a[i].s];
    for (int i = 1; i <= n; i++) ls[a[i].s].push_back(a[i].f);
    int mx = 0;
    for (int i = 1; i <= xs.size(); i++) {
        for (int p : ls[i]) mx = max(mx, p);
        bl[i][0] = mx;
        for (int j = 1; j < LOG; j++) bl[i][j] = bl[bl[i][j - 1]][j - 1];
    }
    set<pii> open;
    int cnt = count(1, xs.size());
    open.insert({1, xs.size()});
    vector<int> out;
    for (int i = 1; i <= n; i++) {
        if (out.size() == k) break;
        auto it = open.upper_bound({a[i].f, 0x3f3f3f3f});
        it--;
        pii cur = *it;
        if (a[i].f < cur.f || a[i].s > cur.s) continue;
        int tmp = count(cur.f, a[i].f) + count(a[i].s, cur.s) + 1 - count(cur.f, cur.s) + cnt;
        if (tmp >= k) {
            out.push_back(i);
            open.erase(cur);
            open.insert({cur.f, a[i].f});
            open.insert({a[i].s, cur.s});
            cnt = tmp;
        }
    }
    if (out.size() < k) printf("-1\n");
    else for (int p : out) printf("%lld\n", p);

    return 0;
}

Compilation message

event2.cpp: In function 'int32_t main()':
event2.cpp:45:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for (int i = 0; i < xs.size(); i++) mp[xs[i]] = i + 1;
      |                     ~~^~~~~~~~~~~
event2.cpp:49:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |     for (int i = 1; i <= xs.size(); i++) {
      |                     ~~^~~~~~~~~~~~
event2.cpp:59:24: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   59 |         if (out.size() == k) break;
      |             ~~~~~~~~~~~^~~~
event2.cpp:73:20: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   73 |     if (out.size() < k) printf("-1\n");
      |         ~~~~~~~~~~~^~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5024 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 540 ms 62596 KB Output is correct
5 Correct 557 ms 62264 KB Output is correct
6 Correct 540 ms 61792 KB Output is correct
7 Correct 447 ms 61112 KB Output is correct
8 Correct 550 ms 62520 KB Output is correct
9 Correct 533 ms 62288 KB Output is correct
10 Correct 490 ms 61820 KB Output is correct
11 Correct 456 ms 61172 KB Output is correct
12 Correct 400 ms 59832 KB Output is correct
13 Correct 381 ms 59576 KB Output is correct
14 Correct 372 ms 59448 KB Output is correct
15 Correct 339 ms 58936 KB Output is correct
16 Correct 224 ms 56404 KB Output is correct
17 Correct 210 ms 56248 KB Output is correct
18 Correct 205 ms 56144 KB Output is correct
19 Correct 172 ms 55608 KB Output is correct
20 Correct 175 ms 55588 KB Output is correct
21 Correct 170 ms 55480 KB Output is correct
22 Correct 191 ms 55480 KB Output is correct
23 Correct 173 ms 55412 KB Output is correct
24 Correct 174 ms 55372 KB Output is correct
25 Correct 177 ms 55380 KB Output is correct
26 Correct 182 ms 55472 KB Output is correct
27 Correct 173 ms 55496 KB Output is correct
28 Correct 437 ms 55484 KB Output is correct
29 Correct 432 ms 55480 KB Output is correct
30 Correct 383 ms 55488 KB Output is correct
31 Correct 369 ms 55600 KB Output is correct
32 Correct 373 ms 55600 KB Output is correct
33 Correct 373 ms 55384 KB Output is correct
34 Correct 291 ms 58176 KB Output is correct
35 Correct 230 ms 57148 KB Output is correct
36 Correct 189 ms 56252 KB Output is correct
37 Correct 394 ms 59264 KB Output is correct
38 Correct 382 ms 59076 KB Output is correct
39 Correct 341 ms 58948 KB Output is correct
40 Correct 346 ms 58808 KB Output is correct
41 Correct 336 ms 58572 KB Output is correct
42 Correct 437 ms 55488 KB Output is correct
43 Correct 369 ms 59064 KB Output is correct
44 Correct 375 ms 58984 KB Output is correct
45 Correct 377 ms 58724 KB Output is correct
46 Correct 362 ms 58760 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 3 ms 5012 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 5 ms 5028 KB Output is correct
6 Correct 4 ms 4944 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 4 ms 4944 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 4 ms 5024 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 4 ms 4940 KB Output is correct
16 Correct 4 ms 5024 KB Output is correct
17 Correct 4 ms 5032 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 4 ms 5032 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 4 ms 4988 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 3 ms 4940 KB Output is correct
25 Correct 3 ms 4940 KB Output is correct
26 Correct 3 ms 4940 KB Output is correct
27 Correct 3 ms 4940 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 3 ms 5012 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 5 ms 5028 KB Output is correct
6 Correct 4 ms 4944 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 4 ms 4940 KB Output is correct
10 Correct 4 ms 4944 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 4 ms 5024 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 4 ms 4940 KB Output is correct
16 Correct 4 ms 5024 KB Output is correct
17 Correct 4 ms 5032 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 4 ms 5032 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 4 ms 4988 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 3 ms 4940 KB Output is correct
25 Correct 3 ms 4940 KB Output is correct
26 Correct 3 ms 4940 KB Output is correct
27 Correct 3 ms 4940 KB Output is correct
28 Correct 8 ms 6476 KB Output is correct
29 Correct 8 ms 6460 KB Output is correct
30 Correct 8 ms 6544 KB Output is correct
31 Correct 8 ms 6568 KB Output is correct
32 Correct 7 ms 6476 KB Output is correct
33 Correct 12 ms 6476 KB Output is correct
34 Correct 12 ms 6476 KB Output is correct
35 Correct 15 ms 6732 KB Output is correct
36 Correct 18 ms 6740 KB Output is correct
37 Correct 13 ms 6712 KB Output is correct
38 Correct 14 ms 6568 KB Output is correct
39 Correct 15 ms 6744 KB Output is correct
40 Correct 16 ms 6732 KB Output is correct
41 Correct 13 ms 6604 KB Output is correct
42 Correct 14 ms 6564 KB Output is correct
43 Correct 10 ms 6576 KB Output is correct
44 Correct 10 ms 6604 KB Output is correct
45 Correct 10 ms 6544 KB Output is correct
46 Correct 14 ms 6464 KB Output is correct
47 Correct 9 ms 6540 KB Output is correct
48 Correct 10 ms 6476 KB Output is correct
49 Correct 8 ms 6476 KB Output is correct
50 Correct 13 ms 6564 KB Output is correct
51 Correct 9 ms 6476 KB Output is correct
52 Correct 9 ms 6480 KB Output is correct
53 Correct 8 ms 6476 KB Output is correct
54 Correct 12 ms 6476 KB Output is correct
55 Correct 13 ms 6092 KB Output is correct
56 Correct 13 ms 6092 KB Output is correct
57 Correct 13 ms 6092 KB Output is correct
58 Correct 13 ms 6092 KB Output is correct
59 Correct 12 ms 6092 KB Output is correct
60 Correct 13 ms 6092 KB Output is correct
61 Correct 17 ms 6060 KB Output is correct
62 Correct 12 ms 6068 KB Output is correct
63 Correct 11 ms 6100 KB Output is correct
64 Correct 11 ms 5836 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5024 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 540 ms 62596 KB Output is correct
5 Correct 557 ms 62264 KB Output is correct
6 Correct 540 ms 61792 KB Output is correct
7 Correct 447 ms 61112 KB Output is correct
8 Correct 550 ms 62520 KB Output is correct
9 Correct 533 ms 62288 KB Output is correct
10 Correct 490 ms 61820 KB Output is correct
11 Correct 456 ms 61172 KB Output is correct
12 Correct 400 ms 59832 KB Output is correct
13 Correct 381 ms 59576 KB Output is correct
14 Correct 372 ms 59448 KB Output is correct
15 Correct 339 ms 58936 KB Output is correct
16 Correct 224 ms 56404 KB Output is correct
17 Correct 210 ms 56248 KB Output is correct
18 Correct 205 ms 56144 KB Output is correct
19 Correct 172 ms 55608 KB Output is correct
20 Correct 175 ms 55588 KB Output is correct
21 Correct 170 ms 55480 KB Output is correct
22 Correct 191 ms 55480 KB Output is correct
23 Correct 173 ms 55412 KB Output is correct
24 Correct 174 ms 55372 KB Output is correct
25 Correct 177 ms 55380 KB Output is correct
26 Correct 182 ms 55472 KB Output is correct
27 Correct 173 ms 55496 KB Output is correct
28 Correct 437 ms 55484 KB Output is correct
29 Correct 432 ms 55480 KB Output is correct
30 Correct 383 ms 55488 KB Output is correct
31 Correct 369 ms 55600 KB Output is correct
32 Correct 373 ms 55600 KB Output is correct
33 Correct 373 ms 55384 KB Output is correct
34 Correct 291 ms 58176 KB Output is correct
35 Correct 230 ms 57148 KB Output is correct
36 Correct 189 ms 56252 KB Output is correct
37 Correct 394 ms 59264 KB Output is correct
38 Correct 382 ms 59076 KB Output is correct
39 Correct 341 ms 58948 KB Output is correct
40 Correct 346 ms 58808 KB Output is correct
41 Correct 336 ms 58572 KB Output is correct
42 Correct 437 ms 55488 KB Output is correct
43 Correct 369 ms 59064 KB Output is correct
44 Correct 375 ms 58984 KB Output is correct
45 Correct 377 ms 58724 KB Output is correct
46 Correct 362 ms 58760 KB Output is correct
47 Correct 3 ms 4940 KB Output is correct
48 Correct 3 ms 5028 KB Output is correct
49 Correct 3 ms 5012 KB Output is correct
50 Correct 3 ms 4940 KB Output is correct
51 Correct 5 ms 5028 KB Output is correct
52 Correct 4 ms 4944 KB Output is correct
53 Correct 3 ms 4940 KB Output is correct
54 Correct 3 ms 4944 KB Output is correct
55 Correct 4 ms 4940 KB Output is correct
56 Correct 4 ms 4944 KB Output is correct
57 Correct 3 ms 4940 KB Output is correct
58 Correct 4 ms 5024 KB Output is correct
59 Correct 3 ms 4940 KB Output is correct
60 Correct 3 ms 4940 KB Output is correct
61 Correct 4 ms 4940 KB Output is correct
62 Correct 4 ms 5024 KB Output is correct
63 Correct 4 ms 5032 KB Output is correct
64 Correct 3 ms 4940 KB Output is correct
65 Correct 4 ms 5032 KB Output is correct
66 Correct 3 ms 4940 KB Output is correct
67 Correct 4 ms 5068 KB Output is correct
68 Correct 4 ms 4988 KB Output is correct
69 Correct 4 ms 4992 KB Output is correct
70 Correct 3 ms 4940 KB Output is correct
71 Correct 3 ms 4940 KB Output is correct
72 Correct 3 ms 4940 KB Output is correct
73 Correct 3 ms 4940 KB Output is correct
74 Correct 8 ms 6476 KB Output is correct
75 Correct 8 ms 6460 KB Output is correct
76 Correct 8 ms 6544 KB Output is correct
77 Correct 8 ms 6568 KB Output is correct
78 Correct 7 ms 6476 KB Output is correct
79 Correct 12 ms 6476 KB Output is correct
80 Correct 12 ms 6476 KB Output is correct
81 Correct 15 ms 6732 KB Output is correct
82 Correct 18 ms 6740 KB Output is correct
83 Correct 13 ms 6712 KB Output is correct
84 Correct 14 ms 6568 KB Output is correct
85 Correct 15 ms 6744 KB Output is correct
86 Correct 16 ms 6732 KB Output is correct
87 Correct 13 ms 6604 KB Output is correct
88 Correct 14 ms 6564 KB Output is correct
89 Correct 10 ms 6576 KB Output is correct
90 Correct 10 ms 6604 KB Output is correct
91 Correct 10 ms 6544 KB Output is correct
92 Correct 14 ms 6464 KB Output is correct
93 Correct 9 ms 6540 KB Output is correct
94 Correct 10 ms 6476 KB Output is correct
95 Correct 8 ms 6476 KB Output is correct
96 Correct 13 ms 6564 KB Output is correct
97 Correct 9 ms 6476 KB Output is correct
98 Correct 9 ms 6480 KB Output is correct
99 Correct 8 ms 6476 KB Output is correct
100 Correct 12 ms 6476 KB Output is correct
101 Correct 13 ms 6092 KB Output is correct
102 Correct 13 ms 6092 KB Output is correct
103 Correct 13 ms 6092 KB Output is correct
104 Correct 13 ms 6092 KB Output is correct
105 Correct 12 ms 6092 KB Output is correct
106 Correct 13 ms 6092 KB Output is correct
107 Correct 17 ms 6060 KB Output is correct
108 Correct 12 ms 6068 KB Output is correct
109 Correct 11 ms 6100 KB Output is correct
110 Correct 11 ms 5836 KB Output is correct
111 Correct 323 ms 55412 KB Output is correct
112 Correct 300 ms 55460 KB Output is correct
113 Correct 311 ms 55580 KB Output is correct
114 Correct 290 ms 55424 KB Output is correct
115 Correct 311 ms 55392 KB Output is correct
116 Correct 530 ms 55508 KB Output is correct
117 Correct 541 ms 55576 KB Output is correct
118 Correct 1234 ms 62696 KB Output is correct
119 Correct 1126 ms 61860 KB Output is correct
120 Correct 723 ms 58956 KB Output is correct
121 Correct 742 ms 55480 KB Output is correct
122 Correct 783 ms 59824 KB Output is correct
123 Correct 736 ms 59556 KB Output is correct
124 Correct 646 ms 58940 KB Output is correct
125 Correct 736 ms 55512 KB Output is correct
126 Correct 406 ms 56380 KB Output is correct
127 Correct 373 ms 56320 KB Output is correct
128 Correct 348 ms 56248 KB Output is correct
129 Correct 680 ms 55488 KB Output is correct
130 Correct 349 ms 55568 KB Output is correct
131 Correct 321 ms 55564 KB Output is correct
132 Correct 319 ms 55572 KB Output is correct
133 Correct 584 ms 55456 KB Output is correct
134 Correct 349 ms 55620 KB Output is correct
135 Correct 324 ms 55496 KB Output is correct
136 Correct 284 ms 55480 KB Output is correct
137 Correct 559 ms 55484 KB Output is correct
138 Correct 322 ms 55480 KB Output is correct
139 Correct 312 ms 55500 KB Output is correct
140 Correct 300 ms 55376 KB Output is correct
141 Correct 541 ms 55404 KB Output is correct
142 Correct 532 ms 41880 KB Output is correct
143 Correct 571 ms 41940 KB Output is correct
144 Correct 505 ms 42100 KB Output is correct
145 Correct 490 ms 42148 KB Output is correct
146 Correct 484 ms 41860 KB Output is correct
147 Correct 483 ms 41868 KB Output is correct
148 Correct 465 ms 41572 KB Output is correct
149 Correct 459 ms 41504 KB Output is correct
150 Correct 449 ms 41360 KB Output is correct
151 Correct 408 ms 40596 KB Output is correct
152 Correct 366 ms 34620 KB Output is correct
153 Correct 491 ms 42084 KB Output is correct
154 Correct 492 ms 41960 KB Output is correct
155 Correct 478 ms 41704 KB Output is correct
156 Correct 469 ms 41588 KB Output is correct
157 Correct 512 ms 41364 KB Output is correct
158 Correct 456 ms 41196 KB Output is correct
159 Correct 407 ms 40536 KB Output is correct
160 Correct 358 ms 34456 KB Output is correct
161 Correct 598 ms 48732 KB Output is correct
162 Correct 592 ms 48580 KB Output is correct
163 Correct 586 ms 48392 KB Output is correct
164 Correct 540 ms 48264 KB Output is correct
165 Correct 511 ms 48016 KB Output is correct
166 Correct 412 ms 55488 KB Output is correct
167 Correct 347 ms 59092 KB Output is correct
168 Correct 335 ms 58888 KB Output is correct
169 Correct 351 ms 58936 KB Output is correct
170 Correct 339 ms 58680 KB Output is correct
171 Correct 351 ms 58648 KB Output is correct
172 Correct 357 ms 59264 KB Output is correct
173 Correct 777 ms 38076 KB Output is correct
174 Correct 825 ms 38072 KB Output is correct
175 Correct 772 ms 38052 KB Output is correct
176 Correct 581 ms 37308 KB Output is correct