oj.uz

답안 #896762

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
896762 2024-01-02T05:42:16 Z juliany2 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 131 ms 27084 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.lower_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

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 98 ms 23344 KB Output is correct
5 Correct 97 ms 23092 KB Output is correct
6 Correct 93 ms 22732 KB Output is correct
7 Correct 89 ms 22220 KB Output is correct
8 Correct 97 ms 23336 KB Output is correct
9 Correct 94 ms 23092 KB Output is correct
10 Correct 97 ms 22840 KB Output is correct
11 Correct 87 ms 22216 KB Output is correct
12 Correct 92 ms 23864 KB Output is correct
13 Correct 92 ms 23600 KB Output is correct
14 Correct 88 ms 23240 KB Output is correct
15 Correct 87 ms 22708 KB Output is correct
16 Correct 90 ms 26660 KB Output is correct
17 Correct 86 ms 26056 KB Output is correct
18 Correct 83 ms 25036 KB Output is correct
19 Correct 85 ms 26732 KB Output is correct
20 Correct 86 ms 26752 KB Output is correct
21 Correct 91 ms 26984 KB Output is correct
22 Correct 89 ms 27060 KB Output is correct
23 Correct 88 ms 26896 KB Output is correct
24 Correct 88 ms 27084 KB Output is correct
25 Correct 90 ms 26908 KB Output is correct
26 Correct 92 ms 26916 KB Output is correct
27 Correct 90 ms 27004 KB Output is correct
28 Correct 58 ms 17880 KB Output is correct
29 Correct 59 ms 17868 KB Output is correct
30 Correct 55 ms 17868 KB Output is correct
31 Correct 55 ms 17880 KB Output is correct
32 Correct 58 ms 17864 KB Output is correct
33 Correct 60 ms 17868 KB Output is correct
34 Correct 75 ms 21456 KB Output is correct
35 Correct 70 ms 20176 KB Output is correct
36 Correct 57 ms 18892 KB Output is correct
37 Correct 97 ms 25352 KB Output is correct
38 Correct 97 ms 24864 KB Output is correct
39 Correct 94 ms 24604 KB Output is correct
40 Correct 93 ms 24432 KB Output is correct
41 Correct 89 ms 24100 KB Output is correct
42 Correct 66 ms 17724 KB Output is correct
43 Correct 105 ms 25292 KB Output is correct
44 Correct 104 ms 25292 KB Output is correct
45 Correct 108 ms 25464 KB Output is correct
46 Correct 109 ms 25548 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2476 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2516 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2476 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2516 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 0 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 3 ms 4700 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 4952 KB Output is correct
32 Correct 3 ms 4952 KB Output is correct
33 Correct 3 ms 4800 KB Output is correct
34 Correct 3 ms 4700 KB Output is correct
35 Correct 4 ms 4700 KB Output is correct
36 Correct 3 ms 4696 KB Output is correct
37 Correct 4 ms 4700 KB Output is correct
38 Correct 3 ms 4700 KB Output is correct
39 Correct 4 ms 4800 KB Output is correct
40 Correct 3 ms 4700 KB Output is correct
41 Correct 3 ms 4876 KB Output is correct
42 Correct 3 ms 4700 KB Output is correct
43 Correct 3 ms 4952 KB Output is correct
44 Correct 3 ms 4796 KB Output is correct
45 Correct 4 ms 4700 KB Output is correct
46 Correct 3 ms 4700 KB Output is correct
47 Correct 3 ms 4952 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 4804 KB Output is correct
53 Correct 3 ms 4876 KB Output is correct
54 Correct 2 ms 4700 KB Output is correct
55 Correct 3 ms 4700 KB Output is correct
56 Correct 3 ms 4700 KB Output is correct
57 Correct 3 ms 4700 KB Output is correct
58 Correct 3 ms 4908 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 4900 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
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 98 ms 23344 KB Output is correct
5 Correct 97 ms 23092 KB Output is correct
6 Correct 93 ms 22732 KB Output is correct
7 Correct 89 ms 22220 KB Output is correct
8 Correct 97 ms 23336 KB Output is correct
9 Correct 94 ms 23092 KB Output is correct
10 Correct 97 ms 22840 KB Output is correct
11 Correct 87 ms 22216 KB Output is correct
12 Correct 92 ms 23864 KB Output is correct
13 Correct 92 ms 23600 KB Output is correct
14 Correct 88 ms 23240 KB Output is correct
15 Correct 87 ms 22708 KB Output is correct
16 Correct 90 ms 26660 KB Output is correct
17 Correct 86 ms 26056 KB Output is correct
18 Correct 83 ms 25036 KB Output is correct
19 Correct 85 ms 26732 KB Output is correct
20 Correct 86 ms 26752 KB Output is correct
21 Correct 91 ms 26984 KB Output is correct
22 Correct 89 ms 27060 KB Output is correct
23 Correct 88 ms 26896 KB Output is correct
24 Correct 88 ms 27084 KB Output is correct
25 Correct 90 ms 26908 KB Output is correct
26 Correct 92 ms 26916 KB Output is correct
27 Correct 90 ms 27004 KB Output is correct
28 Correct 58 ms 17880 KB Output is correct
29 Correct 59 ms 17868 KB Output is correct
30 Correct 55 ms 17868 KB Output is correct
31 Correct 55 ms 17880 KB Output is correct
32 Correct 58 ms 17864 KB Output is correct
33 Correct 60 ms 17868 KB Output is correct
34 Correct 75 ms 21456 KB Output is correct
35 Correct 70 ms 20176 KB Output is correct
36 Correct 57 ms 18892 KB Output is correct
37 Correct 97 ms 25352 KB Output is correct
38 Correct 97 ms 24864 KB Output is correct
39 Correct 94 ms 24604 KB Output is correct
40 Correct 93 ms 24432 KB Output is correct
41 Correct 89 ms 24100 KB Output is correct
42 Correct 66 ms 17724 KB Output is correct
43 Correct 105 ms 25292 KB Output is correct
44 Correct 104 ms 25292 KB Output is correct
45 Correct 108 ms 25464 KB Output is correct
46 Correct 109 ms 25548 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 0 ms 2396 KB Output is correct
49 Correct 0 ms 2396 KB Output is correct
50 Correct 0 ms 2396 KB Output is correct
51 Correct 1 ms 2476 KB Output is correct
52 Correct 1 ms 2396 KB Output is correct
53 Correct 0 ms 2396 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 0 ms 2396 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 1 ms 2396 KB Output is correct
58 Correct 1 ms 2396 KB Output is correct
59 Correct 1 ms 2396 KB Output is correct
60 Correct 1 ms 2396 KB Output is correct
61 Correct 1 ms 2396 KB Output is correct
62 Correct 1 ms 2516 KB Output is correct
63 Correct 1 ms 2396 KB Output is correct
64 Correct 0 ms 2396 KB Output is correct
65 Correct 0 ms 2396 KB Output is correct
66 Correct 1 ms 2396 KB Output is correct
67 Correct 1 ms 2396 KB Output is correct
68 Correct 1 ms 2396 KB Output is correct
69 Correct 0 ms 2396 KB Output is correct
70 Correct 1 ms 2396 KB Output is correct
71 Correct 1 ms 2396 KB Output is correct
72 Correct 1 ms 2396 KB Output is correct
73 Correct 1 ms 2396 KB Output is correct
74 Correct 3 ms 4700 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 4952 KB Output is correct
78 Correct 3 ms 4952 KB Output is correct
79 Correct 3 ms 4800 KB Output is correct
80 Correct 3 ms 4700 KB Output is correct
81 Correct 4 ms 4700 KB Output is correct
82 Correct 3 ms 4696 KB Output is correct
83 Correct 4 ms 4700 KB Output is correct
84 Correct 3 ms 4700 KB Output is correct
85 Correct 4 ms 4800 KB Output is correct
86 Correct 3 ms 4700 KB Output is correct
87 Correct 3 ms 4876 KB Output is correct
88 Correct 3 ms 4700 KB Output is correct
89 Correct 3 ms 4952 KB Output is correct
90 Correct 3 ms 4796 KB Output is correct
91 Correct 4 ms 4700 KB Output is correct
92 Correct 3 ms 4700 KB Output is correct
93 Correct 3 ms 4952 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 4804 KB Output is correct
99 Correct 3 ms 4876 KB Output is correct
100 Correct 2 ms 4700 KB Output is correct
101 Correct 3 ms 4700 KB Output is correct
102 Correct 3 ms 4700 KB Output is correct
103 Correct 3 ms 4700 KB Output is correct
104 Correct 3 ms 4908 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 4900 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 94 ms 23336 KB Output is correct
112 Correct 95 ms 23760 KB Output is correct
113 Correct 97 ms 24104 KB Output is correct
114 Correct 107 ms 25548 KB Output is correct
115 Correct 119 ms 26672 KB Output is correct
116 Correct 82 ms 17868 KB Output is correct
117 Correct 82 ms 17876 KB Output is correct
118 Correct 131 ms 23332 KB Output is correct
119 Correct 124 ms 22912 KB Output is correct
120 Correct 111 ms 22692 KB Output is correct
121 Correct 100 ms 17868 KB Output is correct
122 Correct 120 ms 23500 KB Output is correct
123 Correct 118 ms 22988 KB Output is correct
124 Correct 112 ms 22740 KB Output is correct
125 Correct 104 ms 17872 KB Output is correct
126 Correct 110 ms 25392 KB Output is correct
127 Correct 114 ms 25288 KB Output is correct
128 Correct 104 ms 24524 KB Output is correct
129 Correct 91 ms 17740 KB Output is correct
130 Correct 105 ms 26568 KB Output is correct
131 Correct 107 ms 26316 KB Output is correct
132 Correct 106 ms 25808 KB Output is correct
133 Correct 83 ms 17864 KB Output is correct
134 Correct 113 ms 26824 KB Output is correct
135 Correct 104 ms 26572 KB Output is correct
136 Correct 104 ms 26320 KB Output is correct
137 Correct 79 ms 17868 KB Output is correct
138 Correct 108 ms 26984 KB Output is correct
139 Correct 105 ms 26824 KB Output is correct
140 Correct 117 ms 26320 KB Output is correct
141 Correct 75 ms 17880 KB Output is correct
142 Correct 90 ms 17348 KB Output is correct
143 Correct 89 ms 17100 KB Output is correct
144 Correct 90 ms 17096 KB Output is correct
145 Correct 75 ms 17356 KB Output is correct
146 Correct 75 ms 17216 KB Output is correct
147 Correct 75 ms 16976 KB Output is correct
148 Correct 74 ms 16932 KB Output is correct
149 Correct 84 ms 17104 KB Output is correct
150 Correct 71 ms 16676 KB Output is correct
151 Correct 68 ms 16076 KB Output is correct
152 Correct 48 ms 11736 KB Output is correct
153 Correct 76 ms 17236 KB Output is correct
154 Correct 77 ms 17224 KB Output is correct
155 Correct 74 ms 16972 KB Output is correct
156 Correct 73 ms 16840 KB Output is correct
157 Correct 73 ms 16848 KB Output is correct
158 Correct 72 ms 16592 KB Output is correct
159 Correct 68 ms 16076 KB Output is correct
160 Correct 48 ms 11724 KB Output is correct
161 Correct 105 ms 20848 KB Output is correct
162 Correct 106 ms 20512 KB Output is correct
163 Correct 102 ms 20512 KB Output is correct
164 Correct 103 ms 20260 KB Output is correct
165 Correct 102 ms 20000 KB Output is correct
166 Correct 61 ms 17868 KB Output is correct
167 Correct 111 ms 25380 KB Output is correct
168 Correct 99 ms 25284 KB Output is correct
169 Correct 102 ms 25296 KB Output is correct
170 Correct 99 ms 25548 KB Output is correct
171 Correct 87 ms 22824 KB Output is correct
172 Correct 85 ms 22960 KB Output is correct
173 Correct 105 ms 16680 KB Output is correct
174 Correct 103 ms 18636 KB Output is correct
175 Correct 103 ms 18632 KB Output is correct
176 Correct 93 ms 17612 KB Output is correct