oj.uz

Submission #976919

# Submission time Handle Problem Language Result Execution time Memory
976919 2024-05-07T09:08:23 Z Double_Slash Event Hopping 2 (JOI21_event2) C++17
100 / 100
 436 ms 21196 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int, int> pint;
#define all(x) x.begin(), x.end()

const int INF = 1e9;
int n, k, l[100001], r[100001], jump[100001][20], depth[100001];
set<pint> s;

int main() {
    cin >> n >> k;
    vector<int> sorted;
    for (int i = 1; i <= n; ++i) {
        cin >> l[i] >> r[i];
        r[i]--;
        sorted.emplace_back(i);
    }
    sort(all(sorted), [&] (int i, int j) { return l[i] == l[j] ? r[i] < r[j] : l[i] > l[j]; });
    int mn = INF;
    for (int i: sorted) {
        if (r[i] < mn) {
            s.emplace(l[i], i);
            auto it = s.lower_bound({r[i] + 1, 0});
            if (it != s.end()) depth[i] = depth[jump[i][0] = it->second] + 1;
            mn = r[i];
        }
    }
    for (int j = 1; j < 20; ++j) {
        for (int i = 1; i <= n; ++i) {
            jump[i][j] = jump[jump[i][j - 1]][j - 1];
        }
    }
    auto query = [&] (int ql, int qr) {
        auto it = s.lower_bound({ql, 0});
        if (it == s.end() or r[it->second] > qr) return 0;
        int i = it->second;
        int ans = depth[i];
        for (int j = 20; --j >= 0;) {
            if (jump[i][j] and r[jump[i][j]] <= qr) i = jump[i][j];
        }
        return ans - depth[i] + 1;
    };
    int cnt = query(1, INF);
    if (cnt < k) {
        cout << "-1\n";
        return 0;
    }
    set<pint> rem;
    rem.emplace(1, INF);
    for (int i = 1; i <= n and k; ++i) {
        auto it = rem.lower_bound({r[i] + 1, 0});
        if (it == rem.begin()) continue;
        auto [l0, r0] = *--it;
        if (l[i] < l0 or r[i] > r0) continue;
        int diff = query(l0, l[i] - 1) + query(r[i] + 1, r0) - query(l0, r0);
        if (cnt + diff < k - 1) continue;
        cout << i << endl;
        cnt += diff;
        k--;
        rem.erase(it);
        if (l0 <= l[i] - 1) rem.emplace(l0, l[i] - 1);
        if (r[i] + 1 <= r0) rem.emplace(r[i] + 1, r0);
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2488 KB Output is correct
4 Correct 260 ms 21136 KB Output is correct
5 Correct 256 ms 20880 KB Output is correct
6 Correct 251 ms 20620 KB Output is correct
7 Correct 242 ms 20256 KB Output is correct
8 Correct 267 ms 21196 KB Output is correct
9 Correct 255 ms 20936 KB Output is correct
10 Correct 270 ms 20912 KB Output is correct
11 Correct 232 ms 20244 KB Output is correct
12 Correct 197 ms 18912 KB Output is correct
13 Correct 200 ms 18964 KB Output is correct
14 Correct 182 ms 18684 KB Output is correct
15 Correct 169 ms 18376 KB Output is correct
16 Correct 110 ms 14928 KB Output is correct
17 Correct 97 ms 14696 KB Output is correct
18 Correct 95 ms 14792 KB Output is correct
19 Correct 74 ms 12612 KB Output is correct
20 Correct 75 ms 12580 KB Output is correct
21 Correct 71 ms 12576 KB Output is correct
22 Correct 62 ms 11996 KB Output is correct
23 Correct 62 ms 11976 KB Output is correct
24 Correct 70 ms 11836 KB Output is correct
25 Correct 65 ms 11832 KB Output is correct
26 Correct 64 ms 11680 KB Output is correct
27 Correct 61 ms 11684 KB Output is correct
28 Correct 87 ms 16312 KB Output is correct
29 Correct 85 ms 16004 KB Output is correct
30 Correct 72 ms 14276 KB Output is correct
31 Correct 76 ms 12424 KB Output is correct
32 Correct 65 ms 11980 KB Output is correct
33 Correct 60 ms 11724 KB Output is correct
34 Correct 156 ms 17728 KB Output is correct
35 Correct 124 ms 17096 KB Output is correct
36 Correct 104 ms 16688 KB Output is correct
37 Correct 168 ms 16836 KB Output is correct
38 Correct 163 ms 16532 KB Output is correct
39 Correct 160 ms 16408 KB Output is correct
40 Correct 160 ms 16424 KB Output is correct
41 Correct 168 ms 16116 KB Output is correct
42 Correct 68 ms 14020 KB Output is correct
43 Correct 164 ms 16548 KB Output is correct
44 Correct 165 ms 16396 KB Output is correct
45 Correct 154 ms 16352 KB Output is correct
46 Correct 151 ms 16144 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4540 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 2 ms 4440 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4544 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 2 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4548 KB Output is correct
20 Correct 1 ms 4540 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4700 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4544 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4540 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 2 ms 4440 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4544 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 2 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4548 KB Output is correct
20 Correct 1 ms 4540 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4700 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4544 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 5 ms 4616 KB Output is correct
29 Correct 4 ms 4596 KB Output is correct
30 Correct 3 ms 4444 KB Output is correct
31 Correct 3 ms 4444 KB Output is correct
32 Correct 3 ms 4620 KB Output is correct
33 Correct 3 ms 4444 KB Output is correct
34 Correct 3 ms 4444 KB Output is correct
35 Correct 10 ms 4808 KB Output is correct
36 Correct 8 ms 4804 KB Output is correct
37 Correct 7 ms 4700 KB Output is correct
38 Correct 3 ms 4564 KB Output is correct
39 Correct 10 ms 4784 KB Output is correct
40 Correct 8 ms 4860 KB Output is correct
41 Correct 8 ms 4700 KB Output is correct
42 Correct 4 ms 4700 KB Output is correct
43 Correct 5 ms 4620 KB Output is correct
44 Correct 5 ms 4616 KB Output is correct
45 Correct 5 ms 4700 KB Output is correct
46 Correct 3 ms 4568 KB Output is correct
47 Correct 3 ms 4556 KB Output is correct
48 Correct 4 ms 4704 KB Output is correct
49 Correct 4 ms 4548 KB Output is correct
50 Correct 3 ms 4444 KB Output is correct
51 Correct 3 ms 4612 KB Output is correct
52 Correct 4 ms 4444 KB Output is correct
53 Correct 3 ms 4444 KB Output is correct
54 Correct 3 ms 4552 KB Output is correct
55 Correct 7 ms 4796 KB Output is correct
56 Correct 8 ms 4808 KB Output is correct
57 Correct 8 ms 4712 KB Output is correct
58 Correct 8 ms 4816 KB Output is correct
59 Correct 8 ms 4712 KB Output is correct
60 Correct 7 ms 4812 KB Output is correct
61 Correct 7 ms 4712 KB Output is correct
62 Correct 8 ms 4560 KB Output is correct
63 Correct 7 ms 4560 KB Output is correct
64 Correct 4 ms 4712 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2488 KB Output is correct
4 Correct 260 ms 21136 KB Output is correct
5 Correct 256 ms 20880 KB Output is correct
6 Correct 251 ms 20620 KB Output is correct
7 Correct 242 ms 20256 KB Output is correct
8 Correct 267 ms 21196 KB Output is correct
9 Correct 255 ms 20936 KB Output is correct
10 Correct 270 ms 20912 KB Output is correct
11 Correct 232 ms 20244 KB Output is correct
12 Correct 197 ms 18912 KB Output is correct
13 Correct 200 ms 18964 KB Output is correct
14 Correct 182 ms 18684 KB Output is correct
15 Correct 169 ms 18376 KB Output is correct
16 Correct 110 ms 14928 KB Output is correct
17 Correct 97 ms 14696 KB Output is correct
18 Correct 95 ms 14792 KB Output is correct
19 Correct 74 ms 12612 KB Output is correct
20 Correct 75 ms 12580 KB Output is correct
21 Correct 71 ms 12576 KB Output is correct
22 Correct 62 ms 11996 KB Output is correct
23 Correct 62 ms 11976 KB Output is correct
24 Correct 70 ms 11836 KB Output is correct
25 Correct 65 ms 11832 KB Output is correct
26 Correct 64 ms 11680 KB Output is correct
27 Correct 61 ms 11684 KB Output is correct
28 Correct 87 ms 16312 KB Output is correct
29 Correct 85 ms 16004 KB Output is correct
30 Correct 72 ms 14276 KB Output is correct
31 Correct 76 ms 12424 KB Output is correct
32 Correct 65 ms 11980 KB Output is correct
33 Correct 60 ms 11724 KB Output is correct
34 Correct 156 ms 17728 KB Output is correct
35 Correct 124 ms 17096 KB Output is correct
36 Correct 104 ms 16688 KB Output is correct
37 Correct 168 ms 16836 KB Output is correct
38 Correct 163 ms 16532 KB Output is correct
39 Correct 160 ms 16408 KB Output is correct
40 Correct 160 ms 16424 KB Output is correct
41 Correct 168 ms 16116 KB Output is correct
42 Correct 68 ms 14020 KB Output is correct
43 Correct 164 ms 16548 KB Output is correct
44 Correct 165 ms 16396 KB Output is correct
45 Correct 154 ms 16352 KB Output is correct
46 Correct 151 ms 16144 KB Output is correct
47 Correct 1 ms 2392 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 4444 KB Output is correct
50 Correct 1 ms 4540 KB Output is correct
51 Correct 1 ms 4444 KB Output is correct
52 Correct 2 ms 4440 KB Output is correct
53 Correct 1 ms 4444 KB Output is correct
54 Correct 1 ms 4444 KB Output is correct
55 Correct 1 ms 4444 KB Output is correct
56 Correct 1 ms 4544 KB Output is correct
57 Correct 1 ms 4444 KB Output is correct
58 Correct 1 ms 4444 KB Output is correct
59 Correct 1 ms 4444 KB Output is correct
60 Correct 1 ms 4444 KB Output is correct
61 Correct 2 ms 4444 KB Output is correct
62 Correct 1 ms 4444 KB Output is correct
63 Correct 1 ms 4444 KB Output is correct
64 Correct 1 ms 4444 KB Output is correct
65 Correct 1 ms 4548 KB Output is correct
66 Correct 1 ms 4540 KB Output is correct
67 Correct 1 ms 4444 KB Output is correct
68 Correct 1 ms 4700 KB Output is correct
69 Correct 1 ms 4444 KB Output is correct
70 Correct 1 ms 4444 KB Output is correct
71 Correct 1 ms 4544 KB Output is correct
72 Correct 1 ms 4444 KB Output is correct
73 Correct 1 ms 4444 KB Output is correct
74 Correct 5 ms 4616 KB Output is correct
75 Correct 4 ms 4596 KB Output is correct
76 Correct 3 ms 4444 KB Output is correct
77 Correct 3 ms 4444 KB Output is correct
78 Correct 3 ms 4620 KB Output is correct
79 Correct 3 ms 4444 KB Output is correct
80 Correct 3 ms 4444 KB Output is correct
81 Correct 10 ms 4808 KB Output is correct
82 Correct 8 ms 4804 KB Output is correct
83 Correct 7 ms 4700 KB Output is correct
84 Correct 3 ms 4564 KB Output is correct
85 Correct 10 ms 4784 KB Output is correct
86 Correct 8 ms 4860 KB Output is correct
87 Correct 8 ms 4700 KB Output is correct
88 Correct 4 ms 4700 KB Output is correct
89 Correct 5 ms 4620 KB Output is correct
90 Correct 5 ms 4616 KB Output is correct
91 Correct 5 ms 4700 KB Output is correct
92 Correct 3 ms 4568 KB Output is correct
93 Correct 3 ms 4556 KB Output is correct
94 Correct 4 ms 4704 KB Output is correct
95 Correct 4 ms 4548 KB Output is correct
96 Correct 3 ms 4444 KB Output is correct
97 Correct 3 ms 4612 KB Output is correct
98 Correct 4 ms 4444 KB Output is correct
99 Correct 3 ms 4444 KB Output is correct
100 Correct 3 ms 4552 KB Output is correct
101 Correct 7 ms 4796 KB Output is correct
102 Correct 8 ms 4808 KB Output is correct
103 Correct 8 ms 4712 KB Output is correct
104 Correct 8 ms 4816 KB Output is correct
105 Correct 8 ms 4712 KB Output is correct
106 Correct 7 ms 4812 KB Output is correct
107 Correct 7 ms 4712 KB Output is correct
108 Correct 8 ms 4560 KB Output is correct
109 Correct 7 ms 4560 KB Output is correct
110 Correct 4 ms 4712 KB Output is correct
111 Correct 76 ms 11872 KB Output is correct
112 Correct 77 ms 11684 KB Output is correct
113 Correct 75 ms 11736 KB Output is correct
114 Correct 75 ms 11792 KB Output is correct
115 Correct 72 ms 11704 KB Output is correct
116 Correct 74 ms 11752 KB Output is correct
117 Correct 75 ms 11648 KB Output is correct
118 Correct 436 ms 21084 KB Output is correct
119 Correct 401 ms 20836 KB Output is correct
120 Correct 248 ms 18352 KB Output is correct
121 Correct 110 ms 16060 KB Output is correct
122 Correct 278 ms 19032 KB Output is correct
123 Correct 264 ms 18816 KB Output is correct
124 Correct 249 ms 18368 KB Output is correct
125 Correct 93 ms 16032 KB Output is correct
126 Correct 141 ms 14964 KB Output is correct
127 Correct 138 ms 14892 KB Output is correct
128 Correct 128 ms 14832 KB Output is correct
129 Correct 82 ms 14276 KB Output is correct
130 Correct 92 ms 12524 KB Output is correct
131 Correct 103 ms 12492 KB Output is correct
132 Correct 90 ms 12664 KB Output is correct
133 Correct 71 ms 12584 KB Output is correct
134 Correct 79 ms 11956 KB Output is correct
135 Correct 77 ms 11976 KB Output is correct
136 Correct 73 ms 11980 KB Output is correct
137 Correct 71 ms 11980 KB Output is correct
138 Correct 71 ms 11824 KB Output is correct
139 Correct 72 ms 11724 KB Output is correct
140 Correct 71 ms 11848 KB Output is correct
141 Correct 67 ms 11720 KB Output is correct
142 Correct 261 ms 17040 KB Output is correct
143 Correct 256 ms 16900 KB Output is correct
144 Correct 255 ms 16892 KB Output is correct
145 Correct 248 ms 17100 KB Output is correct
146 Correct 242 ms 16840 KB Output is correct
147 Correct 243 ms 16836 KB Output is correct
148 Correct 232 ms 16836 KB Output is correct
149 Correct 232 ms 16832 KB Output is correct
150 Correct 249 ms 17252 KB Output is correct
151 Correct 212 ms 16844 KB Output is correct
152 Correct 80 ms 16444 KB Output is correct
153 Correct 259 ms 17228 KB Output is correct
154 Correct 254 ms 16912 KB Output is correct
155 Correct 244 ms 17008 KB Output is correct
156 Correct 234 ms 16844 KB Output is correct
157 Correct 242 ms 16812 KB Output is correct
158 Correct 249 ms 17356 KB Output is correct
159 Correct 211 ms 16840 KB Output is correct
160 Correct 80 ms 16328 KB Output is correct
161 Correct 257 ms 18312 KB Output is correct
162 Correct 253 ms 18380 KB Output is correct
163 Correct 220 ms 18212 KB Output is correct
164 Correct 210 ms 18180 KB Output is correct
165 Correct 225 ms 18244 KB Output is correct
166 Correct 72 ms 14028 KB Output is correct
167 Correct 168 ms 16464 KB Output is correct
168 Correct 173 ms 16332 KB Output is correct
169 Correct 171 ms 16192 KB Output is correct
170 Correct 155 ms 16240 KB Output is correct
171 Correct 168 ms 18356 KB Output is correct
172 Correct 185 ms 18952 KB Output is correct
173 Correct 244 ms 17100 KB Output is correct
174 Correct 242 ms 17168 KB Output is correct
175 Correct 254 ms 17336 KB Output is correct
176 Correct 203 ms 17552 KB Output is correct