oj.uz

Submission #896760

# Submission time Handle Problem Language Result Execution time Memory
896760 2024-01-02T05:36:35 Z juliany2 Event Hopping 2 (JOI21_event2) C++17
39 / 100
 143 ms 29268 KB 
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define all(x) (x).begin(), (x).end()

const int N = 2e5 + 7, L = 20;
int n, k;
array<int, 2> a[N];
int lift[N][L];

int main() {
    cin.tie(0)->sync_with_stdio(false);

    cin >> n >> k;

    vector<int> srt = {0};
    for (int i = 1; i <= n; i++) {
        cin >> a[i][0] >> a[i][1];
        srt.push_back(a[i][0]);
        srt.push_back(a[i][1]);
    }

    sort(all(srt));
    srt.erase(unique(all(srt)), srt.end());

    int m = srt.size();

    for (int i = 1; i <= m; i++)
        lift[i][0] = m + 1;
    fill(lift[m + 1], lift[m + 1] + L, m + 1);

    for (int i = 1; i <= n; i++) {
        a[i][0] = lower_bound(all(srt), a[i][0]) - srt.begin();
        a[i][1] = lower_bound(all(srt), a[i][1]) - srt.begin();

        lift[a[i][0]][0] = min(lift[a[i][0]][0], a[i][1]);
    }

    for (int i = m - 1; i >= 0; i--) {
        lift[i][0] = min(lift[i][0], lift[i + 1][0]);
        for (int j = 1; j < L; j++)
            lift[i][j] = lift[lift[i][j - 1]][j - 1];
    }

    auto query = [&](int l, int r) {
        int ret = 0;
        for (int i = L - 1; i >= 0; i--)
            if (lift[l][i] <= r)
                l = lift[l][i], ret += (1 << i);
        return ret;
    };

    int cnt = query(1, m);
    vector<int> ans;
    set<int> cov = {0, m};
    for (int i = 1; i <= n; i++) {
        if (*cov.lower_bound(a[i][0]) < a[i][1] || ans.size() == k)
            continue;

        int l = *prev(cov.lower_bound(a[i][0])) + 1, r = *cov.upper_bound(a[i][1]);
        int cur = cnt - query(l, r) + query(l, a[i][0]) + query(a[i][1], r);
        if (cur + ans.size() + 1 >= k) {
            ans.push_back(i);
            cnt = cur;
            for (int j = a[i][0]; j < a[i][1]; j++)
                cov.insert(j);
        }
    }

    if (ans.size() < k)
        cout << -1 << '\n';
    else {
        for (int i : ans)
            cout << i << '\n';
    }

    return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:57:63: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   57 |         if (*cov.lower_bound(a[i][0]) < a[i][1] || ans.size() == k)
      |                                                    ~~~~~~~~~~~^~~~
event2.cpp:62:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   62 |         if (cur + ans.size() + 1 >= k) {
      |             ~~~~~~~~~~~~~~~~~~~~~^~~~
event2.cpp:70:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   70 |     if (ans.size() < k)
      |         ~~~~~~~~~~~^~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 112 ms 23332 KB Output is correct
5 Correct 107 ms 25132 KB Output is correct
6 Correct 101 ms 24628 KB Output is correct
7 Correct 92 ms 24272 KB Output is correct
8 Correct 97 ms 25260 KB Output is correct
9 Correct 104 ms 25184 KB Output is correct
10 Correct 106 ms 24776 KB Output is correct
11 Correct 91 ms 24268 KB Output is correct
12 Correct 99 ms 25724 KB Output is correct
13 Correct 92 ms 25404 KB Output is correct
14 Correct 90 ms 25392 KB Output is correct
15 Correct 86 ms 24492 KB Output is correct
16 Correct 111 ms 28088 KB Output is correct
17 Correct 87 ms 27852 KB Output is correct
18 Correct 87 ms 27032 KB Output is correct
19 Correct 86 ms 28596 KB Output is correct
20 Correct 95 ms 28872 KB Output is correct
21 Correct 91 ms 29268 KB Output is correct
22 Correct 95 ms 29116 KB Output is correct
23 Correct 100 ms 28852 KB Output is correct
24 Correct 96 ms 28860 KB Output is correct
25 Correct 95 ms 28856 KB Output is correct
26 Correct 99 ms 28932 KB Output is correct
27 Correct 91 ms 28912 KB Output is correct
28 Correct 61 ms 19676 KB Output is correct
29 Correct 58 ms 19672 KB Output is correct
30 Correct 57 ms 19660 KB Output is correct
31 Correct 58 ms 19684 KB Output is correct
32 Correct 61 ms 19660 KB Output is correct
33 Correct 75 ms 19660 KB Output is correct
34 Correct 86 ms 23248 KB Output is correct
35 Correct 71 ms 21948 KB Output is correct
36 Correct 60 ms 20924 KB Output is correct
37 Correct 99 ms 27076 KB Output is correct
38 Correct 97 ms 26832 KB Output is correct
39 Correct 95 ms 26572 KB Output is correct
40 Correct 99 ms 26316 KB Output is correct
41 Correct 113 ms 26052 KB Output is correct
42 Correct 72 ms 19656 KB Output is correct
43 Correct 106 ms 27088 KB Output is correct
44 Correct 127 ms 27316 KB Output is correct
45 Correct 103 ms 27340 KB Output is correct
46 Correct 107 ms 27472 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2512 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2392 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2512 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2392 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2392 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 0 ms 2396 KB Output is correct
25 Correct 0 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 0 ms 2396 KB Output is correct
28 Correct 3 ms 4748 KB Output is correct
29 Correct 3 ms 4700 KB Output is correct
30 Correct 3 ms 4956 KB Output is correct
31 Correct 3 ms 4956 KB Output is correct
32 Correct 4 ms 4956 KB Output is correct
33 Correct 3 ms 4700 KB Output is correct
34 Correct 3 ms 4696 KB Output is correct
35 Correct 4 ms 4700 KB Output is correct
36 Correct 3 ms 4700 KB Output is correct
37 Correct 3 ms 4700 KB Output is correct
38 Correct 3 ms 4700 KB Output is correct
39 Correct 4 ms 4700 KB Output is correct
40 Correct 3 ms 4700 KB Output is correct
41 Correct 4 ms 4700 KB Output is correct
42 Correct 3 ms 4700 KB Output is correct
43 Correct 3 ms 4956 KB Output is correct
44 Correct 3 ms 4956 KB Output is correct
45 Correct 3 ms 4700 KB Output is correct
46 Correct 3 ms 4700 KB Output is correct
47 Correct 4 ms 4956 KB Output is correct
48 Correct 3 ms 4952 KB Output is correct
49 Correct 3 ms 4956 KB Output is correct
50 Correct 3 ms 4700 KB Output is correct
51 Correct 3 ms 4956 KB Output is correct
52 Correct 3 ms 4956 KB Output is correct
53 Correct 3 ms 4956 KB Output is correct
54 Correct 3 ms 4700 KB Output is correct
55 Correct 3 ms 4872 KB Output is correct
56 Correct 3 ms 4848 KB Output is correct
57 Correct 3 ms 4700 KB Output is correct
58 Correct 3 ms 4700 KB Output is correct
59 Correct 3 ms 4700 KB Output is correct
60 Correct 3 ms 4700 KB Output is correct
61 Correct 3 ms 4680 KB Output is correct
62 Correct 3 ms 4700 KB Output is correct
63 Correct 3 ms 4700 KB Output is correct
64 Correct 2 ms 4700 KB Output is correct

Subtask #4
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 112 ms 23332 KB Output is correct
5 Correct 107 ms 25132 KB Output is correct
6 Correct 101 ms 24628 KB Output is correct
7 Correct 92 ms 24272 KB Output is correct
8 Correct 97 ms 25260 KB Output is correct
9 Correct 104 ms 25184 KB Output is correct
10 Correct 106 ms 24776 KB Output is correct
11 Correct 91 ms 24268 KB Output is correct
12 Correct 99 ms 25724 KB Output is correct
13 Correct 92 ms 25404 KB Output is correct
14 Correct 90 ms 25392 KB Output is correct
15 Correct 86 ms 24492 KB Output is correct
16 Correct 111 ms 28088 KB Output is correct
17 Correct 87 ms 27852 KB Output is correct
18 Correct 87 ms 27032 KB Output is correct
19 Correct 86 ms 28596 KB Output is correct
20 Correct 95 ms 28872 KB Output is correct
21 Correct 91 ms 29268 KB Output is correct
22 Correct 95 ms 29116 KB Output is correct
23 Correct 100 ms 28852 KB Output is correct
24 Correct 96 ms 28860 KB Output is correct
25 Correct 95 ms 28856 KB Output is correct
26 Correct 99 ms 28932 KB Output is correct
27 Correct 91 ms 28912 KB Output is correct
28 Correct 61 ms 19676 KB Output is correct
29 Correct 58 ms 19672 KB Output is correct
30 Correct 57 ms 19660 KB Output is correct
31 Correct 58 ms 19684 KB Output is correct
32 Correct 61 ms 19660 KB Output is correct
33 Correct 75 ms 19660 KB Output is correct
34 Correct 86 ms 23248 KB Output is correct
35 Correct 71 ms 21948 KB Output is correct
36 Correct 60 ms 20924 KB Output is correct
37 Correct 99 ms 27076 KB Output is correct
38 Correct 97 ms 26832 KB Output is correct
39 Correct 95 ms 26572 KB Output is correct
40 Correct 99 ms 26316 KB Output is correct
41 Correct 113 ms 26052 KB Output is correct
42 Correct 72 ms 19656 KB Output is correct
43 Correct 106 ms 27088 KB Output is correct
44 Correct 127 ms 27316 KB Output is correct
45 Correct 103 ms 27340 KB Output is correct
46 Correct 107 ms 27472 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 0 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 0 ms 2396 KB Output is correct
51 Correct 1 ms 2396 KB Output is correct
52 Correct 0 ms 2396 KB Output is correct
53 Correct 1 ms 2392 KB Output is correct
54 Correct 1 ms 2392 KB Output is correct
55 Correct 0 ms 2396 KB Output is correct
56 Correct 1 ms 2512 KB Output is correct
57 Correct 0 ms 2396 KB Output is correct
58 Correct 0 ms 2396 KB Output is correct
59 Correct 1 ms 2396 KB Output is correct
60 Correct 0 ms 2396 KB Output is correct
61 Correct 1 ms 2396 KB Output is correct
62 Correct 0 ms 2396 KB Output is correct
63 Correct 1 ms 2392 KB Output is correct
64 Correct 1 ms 2392 KB Output is correct
65 Correct 1 ms 2392 KB Output is correct
66 Correct 1 ms 2396 KB Output is correct
67 Correct 1 ms 2392 KB Output is correct
68 Correct 1 ms 2396 KB Output is correct
69 Correct 0 ms 2396 KB Output is correct
70 Correct 0 ms 2396 KB Output is correct
71 Correct 0 ms 2396 KB Output is correct
72 Correct 1 ms 2396 KB Output is correct
73 Correct 0 ms 2396 KB Output is correct
74 Correct 3 ms 4748 KB Output is correct
75 Correct 3 ms 4700 KB Output is correct
76 Correct 3 ms 4956 KB Output is correct
77 Correct 3 ms 4956 KB Output is correct
78 Correct 4 ms 4956 KB Output is correct
79 Correct 3 ms 4700 KB Output is correct
80 Correct 3 ms 4696 KB Output is correct
81 Correct 4 ms 4700 KB Output is correct
82 Correct 3 ms 4700 KB Output is correct
83 Correct 3 ms 4700 KB Output is correct
84 Correct 3 ms 4700 KB Output is correct
85 Correct 4 ms 4700 KB Output is correct
86 Correct 3 ms 4700 KB Output is correct
87 Correct 4 ms 4700 KB Output is correct
88 Correct 3 ms 4700 KB Output is correct
89 Correct 3 ms 4956 KB Output is correct
90 Correct 3 ms 4956 KB Output is correct
91 Correct 3 ms 4700 KB Output is correct
92 Correct 3 ms 4700 KB Output is correct
93 Correct 4 ms 4956 KB Output is correct
94 Correct 3 ms 4952 KB Output is correct
95 Correct 3 ms 4956 KB Output is correct
96 Correct 3 ms 4700 KB Output is correct
97 Correct 3 ms 4956 KB Output is correct
98 Correct 3 ms 4956 KB Output is correct
99 Correct 3 ms 4956 KB Output is correct
100 Correct 3 ms 4700 KB Output is correct
101 Correct 3 ms 4872 KB Output is correct
102 Correct 3 ms 4848 KB Output is correct
103 Correct 3 ms 4700 KB Output is correct
104 Correct 3 ms 4700 KB Output is correct
105 Correct 3 ms 4700 KB Output is correct
106 Correct 3 ms 4700 KB Output is correct
107 Correct 3 ms 4680 KB Output is correct
108 Correct 3 ms 4700 KB Output is correct
109 Correct 3 ms 4700 KB Output is correct
110 Correct 2 ms 4700 KB Output is correct
111 Correct 93 ms 25084 KB Output is correct
112 Correct 106 ms 25712 KB Output is correct
113 Correct 102 ms 26040 KB Output is correct
114 Correct 113 ms 27596 KB Output is correct
115 Correct 120 ms 28424 KB Output is correct
116 Correct 90 ms 19744 KB Output is correct
117 Correct 84 ms 19656 KB Output is correct
118 Correct 134 ms 25468 KB Output is correct
119 Correct 124 ms 24776 KB Output is correct
120 Correct 116 ms 24524 KB Output is correct
121 Correct 94 ms 19720 KB Output is correct
122 Correct 143 ms 25424 KB Output is correct
123 Correct 118 ms 25080 KB Output is correct
124 Correct 112 ms 24528 KB Output is correct
125 Correct 100 ms 19656 KB Output is correct
126 Correct 113 ms 27396 KB Output is correct
127 Correct 107 ms 27060 KB Output is correct
128 Correct 116 ms 26504 KB Output is correct
129 Correct 100 ms 19656 KB Output is correct
130 Correct 107 ms 28336 KB Output is correct
131 Correct 107 ms 28168 KB Output is correct
132 Correct 112 ms 27868 KB Output is correct
133 Correct 89 ms 19664 KB Output is correct
134 Correct 117 ms 28796 KB Output is correct
135 Correct 114 ms 28592 KB Output is correct
136 Correct 102 ms 28084 KB Output is correct
137 Correct 79 ms 19660 KB Output is correct
138 Correct 126 ms 28880 KB Output is correct
139 Correct 107 ms 28908 KB Output is correct
140 Correct 114 ms 28412 KB Output is correct
141 Correct 80 ms 19756 KB Output is correct
142 Correct 92 ms 19284 KB Output is correct
143 Correct 91 ms 19148 KB Output is correct
144 Correct 94 ms 19224 KB Output is correct
145 Correct 78 ms 19112 KB Output is correct
146 Correct 87 ms 19152 KB Output is correct
147 Correct 76 ms 18908 KB Output is correct
148 Correct 74 ms 18896 KB Output is correct
149 Correct 77 ms 19112 KB Output is correct
150 Correct 73 ms 18640 KB Output is correct
151 Correct 70 ms 18108 KB Output is correct
152 Correct 49 ms 13684 KB Output is correct
153 Correct 94 ms 19144 KB Output is correct
154 Correct 76 ms 19148 KB Output is correct
155 Correct 76 ms 18984 KB Output is correct
156 Correct 74 ms 18848 KB Output is correct
157 Correct 76 ms 19004 KB Output is correct
158 Correct 73 ms 18472 KB Output is correct
159 Correct 69 ms 17912 KB Output is correct
160 Correct 56 ms 13528 KB Output is correct
161 Correct 107 ms 22896 KB Output is correct
162 Correct 104 ms 22504 KB Output is correct
163 Correct 102 ms 22368 KB Output is correct
164 Correct 101 ms 22220 KB Output is correct
165 Correct 103 ms 21940 KB Output is correct
166 Correct 63 ms 19768 KB Output is correct
167 Correct 107 ms 27260 KB Output is correct
168 Correct 100 ms 27340 KB Output is correct
169 Correct 105 ms 27340 KB Output is correct
170 Correct 105 ms 27440 KB Output is correct
171 Correct 85 ms 24088 KB Output is correct
172 Correct 94 ms 24936 KB Output is correct
173 Incorrect 104 ms 18332 KB Output isn't correct
174 Halted 0 ms 0 KB -