oj.uz

Submission #415066

# Submission time Handle Problem Language Result Execution time Memory
415066 2021-05-31T13:37:57 Z 최서현(#7466) Event Hopping 2 (JOI21_event2) C++17
100 / 100
 315 ms 16800 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <utility>
#include <tuple>
#include <queue>
#include <set>
#define pii pair<int, int>
#define piii pair<int, pii>
#define pll pair<long long, long long>
#define plll pair<long long, pll>
#define tiii tuple<int, int, int>
#define tiiii tuple<int, int, int, int>
#define ff first
#define ss second
#define ee ss.ff
#define rr ss.ss
#define DEBUG

using namespace std;

const int INF = (int)1e9 + 7;
pii X[101010];
int sp[101010][20];

int qry(int l, int r)
{
    if(l == r) return 0;
    int ret = 1;
    for(int i = 19; i >= 0; --i) if(sp[l][i] < r) l = sp[l][i], ret += (1 << i);
    return ret;
}

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

    int n, k; cin >> n >> k;
    int N = n + 2; k += 2;
    pii A[n]; for(auto &i : A) cin >> i.ff >> i.ss;
    piii B[N]; for(int i = 0; i < n; ++i) B[i] = {A[i].ss, {A[i].ff, i}};
    B[n] = {-INF, {-INF, n}}, B[n + 1] = {INF, {INF, n}};
    sort(B, B + N);
    int C[n]; for(int i = 0; i < N; ++i) if(B[i].rr < n) C[B[i].rr] = i;
    for(int i = 0; i < N; ++i) X[i] = {B[i].ee, B[i].ff};

    queue<pii> Q;
    for(int i = 0; i < N; ++i)
    {
        while(Q.size() && Q.front().ff <= X[i].ff) sp[Q.front().ss][0] = i, Q.pop();
        Q.push({X[i].ss, i});
    }
    while(Q.size()) sp[Q.front().ss][0] = INF, Q.pop();

    for(int i = 1; i < 20; ++i) for(int j = 0; j < N; ++j)
        sp[j][i] = (sp[j][i - 1] == INF ? INF : sp[sp[j][i - 1]][i - 1]);

    int ans = qry(0, N);
    if(ans < k) { cout << -1; return 0; }

    set<pii> S, T;
    S.insert({0, N});
    int cnt = k - 2;
    for(int i = 0; i < n; ++i)
    {
        if(cnt == 0) return 0;
        auto itt = T.upper_bound({X[C[i]].ff, INF});
        if((itt != T.end() && itt->ff < X[C[i]].ss) || (itt != T.begin() && prev(itt)->ss > X[C[i]].ff)) continue;

        auto it = S.upper_bound({C[i], INF}); --it;
        int s = it->ff, e = it->ss;
        int l = max(int(upper_bound(B, B + N, piii{X[C[i]].ff, pii{INF, INF}}) - B), s);
        int r = min(sp[C[i]][0], e);
//        cout << endl << i << endl;
//        for(auto j : S) cout << j.ff << ' ' << j.ss << endl;
//        cout << endl;
//        if(it != S.begin()) cout << i << ' ' << l << ' ' << r << ' ' << prev(it)->ff << ' ' << prev(it)->ss << endl;
        int _ans = ans;
        _ans -= qry(s, e);
        _ans += qry(s, l);
        _ans += qry(r, e);
        ++_ans;
        if(_ans < k) continue;
        cout << i + 1 << '\n';
        ans = _ans;
        S.erase(it);
        if(s < l) S.insert({s, l});
        if(r < e) S.insert({r, e});
        T.insert(X[C[i]]);
        --cnt;
    }

//    if(cnt) while(1);
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 117 ms 16064 KB Output is correct
5 Correct 112 ms 16052 KB Output is correct
6 Correct 118 ms 15888 KB Output is correct
7 Correct 107 ms 15308 KB Output is correct
8 Correct 144 ms 16292 KB Output is correct
9 Correct 115 ms 16128 KB Output is correct
10 Correct 114 ms 15904 KB Output is correct
11 Correct 116 ms 15352 KB Output is correct
12 Correct 101 ms 14440 KB Output is correct
13 Correct 97 ms 14436 KB Output is correct
14 Correct 94 ms 14164 KB Output is correct
15 Correct 93 ms 13800 KB Output is correct
16 Correct 84 ms 12108 KB Output is correct
17 Correct 76 ms 11980 KB Output is correct
18 Correct 71 ms 11972 KB Output is correct
19 Correct 77 ms 11464 KB Output is correct
20 Correct 56 ms 11476 KB Output is correct
21 Correct 56 ms 11512 KB Output is correct
22 Correct 53 ms 11404 KB Output is correct
23 Correct 51 ms 11408 KB Output is correct
24 Correct 52 ms 11412 KB Output is correct
25 Correct 61 ms 11480 KB Output is correct
26 Correct 54 ms 11460 KB Output is correct
27 Correct 52 ms 11544 KB Output is correct
28 Correct 52 ms 11460 KB Output is correct
29 Correct 56 ms 11360 KB Output is correct
30 Correct 57 ms 11416 KB Output is correct
31 Correct 54 ms 11416 KB Output is correct
32 Correct 52 ms 11416 KB Output is correct
33 Correct 61 ms 11540 KB Output is correct
34 Correct 83 ms 13212 KB Output is correct
35 Correct 71 ms 12648 KB Output is correct
36 Correct 63 ms 12044 KB Output is correct
37 Correct 97 ms 14064 KB Output is correct
38 Correct 86 ms 13988 KB Output is correct
39 Correct 90 ms 13848 KB Output is correct
40 Correct 89 ms 13984 KB Output is correct
41 Correct 85 ms 13572 KB Output is correct
42 Correct 58 ms 11404 KB Output is correct
43 Correct 101 ms 13980 KB Output is correct
44 Correct 98 ms 13892 KB Output is correct
45 Correct 96 ms 13696 KB Output is correct
46 Correct 95 ms 13652 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 2 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 2 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 3 ms 716 KB Output is correct
29 Correct 3 ms 720 KB Output is correct
30 Correct 3 ms 716 KB Output is correct
31 Correct 2 ms 716 KB Output is correct
32 Correct 3 ms 652 KB Output is correct
33 Correct 2 ms 716 KB Output is correct
34 Correct 3 ms 712 KB Output is correct
35 Correct 6 ms 848 KB Output is correct
36 Correct 5 ms 780 KB Output is correct
37 Correct 5 ms 716 KB Output is correct
38 Correct 3 ms 716 KB Output is correct
39 Correct 5 ms 844 KB Output is correct
40 Correct 5 ms 780 KB Output is correct
41 Correct 6 ms 716 KB Output is correct
42 Correct 2 ms 588 KB Output is correct
43 Correct 4 ms 716 KB Output is correct
44 Correct 4 ms 716 KB Output is correct
45 Correct 3 ms 656 KB Output is correct
46 Correct 3 ms 716 KB Output is correct
47 Correct 3 ms 716 KB Output is correct
48 Correct 3 ms 728 KB Output is correct
49 Correct 3 ms 716 KB Output is correct
50 Correct 2 ms 588 KB Output is correct
51 Correct 3 ms 716 KB Output is correct
52 Correct 3 ms 716 KB Output is correct
53 Correct 3 ms 716 KB Output is correct
54 Correct 2 ms 716 KB Output is correct
55 Correct 4 ms 844 KB Output is correct
56 Correct 4 ms 844 KB Output is correct
57 Correct 4 ms 844 KB Output is correct
58 Correct 4 ms 844 KB Output is correct
59 Correct 4 ms 844 KB Output is correct
60 Correct 4 ms 844 KB Output is correct
61 Correct 4 ms 740 KB Output is correct
62 Correct 4 ms 844 KB Output is correct
63 Correct 4 ms 776 KB Output is correct
64 Correct 2 ms 716 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 117 ms 16064 KB Output is correct
5 Correct 112 ms 16052 KB Output is correct
6 Correct 118 ms 15888 KB Output is correct
7 Correct 107 ms 15308 KB Output is correct
8 Correct 144 ms 16292 KB Output is correct
9 Correct 115 ms 16128 KB Output is correct
10 Correct 114 ms 15904 KB Output is correct
11 Correct 116 ms 15352 KB Output is correct
12 Correct 101 ms 14440 KB Output is correct
13 Correct 97 ms 14436 KB Output is correct
14 Correct 94 ms 14164 KB Output is correct
15 Correct 93 ms 13800 KB Output is correct
16 Correct 84 ms 12108 KB Output is correct
17 Correct 76 ms 11980 KB Output is correct
18 Correct 71 ms 11972 KB Output is correct
19 Correct 77 ms 11464 KB Output is correct
20 Correct 56 ms 11476 KB Output is correct
21 Correct 56 ms 11512 KB Output is correct
22 Correct 53 ms 11404 KB Output is correct
23 Correct 51 ms 11408 KB Output is correct
24 Correct 52 ms 11412 KB Output is correct
25 Correct 61 ms 11480 KB Output is correct
26 Correct 54 ms 11460 KB Output is correct
27 Correct 52 ms 11544 KB Output is correct
28 Correct 52 ms 11460 KB Output is correct
29 Correct 56 ms 11360 KB Output is correct
30 Correct 57 ms 11416 KB Output is correct
31 Correct 54 ms 11416 KB Output is correct
32 Correct 52 ms 11416 KB Output is correct
33 Correct 61 ms 11540 KB Output is correct
34 Correct 83 ms 13212 KB Output is correct
35 Correct 71 ms 12648 KB Output is correct
36 Correct 63 ms 12044 KB Output is correct
37 Correct 97 ms 14064 KB Output is correct
38 Correct 86 ms 13988 KB Output is correct
39 Correct 90 ms 13848 KB Output is correct
40 Correct 89 ms 13984 KB Output is correct
41 Correct 85 ms 13572 KB Output is correct
42 Correct 58 ms 11404 KB Output is correct
43 Correct 101 ms 13980 KB Output is correct
44 Correct 98 ms 13892 KB Output is correct
45 Correct 96 ms 13696 KB Output is correct
46 Correct 95 ms 13652 KB Output is correct
47 Correct 1 ms 324 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 2 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 2 ms 204 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 1 ms 320 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 324 KB Output is correct
64 Correct 1 ms 332 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 1 ms 204 KB Output is correct
67 Correct 1 ms 204 KB Output is correct
68 Correct 1 ms 204 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 1 ms 204 KB Output is correct
72 Correct 1 ms 204 KB Output is correct
73 Correct 1 ms 332 KB Output is correct
74 Correct 3 ms 716 KB Output is correct
75 Correct 3 ms 720 KB Output is correct
76 Correct 3 ms 716 KB Output is correct
77 Correct 2 ms 716 KB Output is correct
78 Correct 3 ms 652 KB Output is correct
79 Correct 2 ms 716 KB Output is correct
80 Correct 3 ms 712 KB Output is correct
81 Correct 6 ms 848 KB Output is correct
82 Correct 5 ms 780 KB Output is correct
83 Correct 5 ms 716 KB Output is correct
84 Correct 3 ms 716 KB Output is correct
85 Correct 5 ms 844 KB Output is correct
86 Correct 5 ms 780 KB Output is correct
87 Correct 6 ms 716 KB Output is correct
88 Correct 2 ms 588 KB Output is correct
89 Correct 4 ms 716 KB Output is correct
90 Correct 4 ms 716 KB Output is correct
91 Correct 3 ms 656 KB Output is correct
92 Correct 3 ms 716 KB Output is correct
93 Correct 3 ms 716 KB Output is correct
94 Correct 3 ms 728 KB Output is correct
95 Correct 3 ms 716 KB Output is correct
96 Correct 2 ms 588 KB Output is correct
97 Correct 3 ms 716 KB Output is correct
98 Correct 3 ms 716 KB Output is correct
99 Correct 3 ms 716 KB Output is correct
100 Correct 2 ms 716 KB Output is correct
101 Correct 4 ms 844 KB Output is correct
102 Correct 4 ms 844 KB Output is correct
103 Correct 4 ms 844 KB Output is correct
104 Correct 4 ms 844 KB Output is correct
105 Correct 4 ms 844 KB Output is correct
106 Correct 4 ms 844 KB Output is correct
107 Correct 4 ms 740 KB Output is correct
108 Correct 4 ms 844 KB Output is correct
109 Correct 4 ms 776 KB Output is correct
110 Correct 2 ms 716 KB Output is correct
111 Correct 66 ms 11460 KB Output is correct
112 Correct 60 ms 11404 KB Output is correct
113 Correct 69 ms 11416 KB Output is correct
114 Correct 56 ms 11460 KB Output is correct
115 Correct 59 ms 11460 KB Output is correct
116 Correct 61 ms 11404 KB Output is correct
117 Correct 56 ms 11408 KB Output is correct
118 Correct 291 ms 16300 KB Output is correct
119 Correct 315 ms 16272 KB Output is correct
120 Correct 149 ms 14240 KB Output is correct
121 Correct 56 ms 11472 KB Output is correct
122 Correct 175 ms 14500 KB Output is correct
123 Correct 191 ms 14252 KB Output is correct
124 Correct 144 ms 14148 KB Output is correct
125 Correct 54 ms 11576 KB Output is correct
126 Correct 105 ms 12100 KB Output is correct
127 Correct 98 ms 12016 KB Output is correct
128 Correct 96 ms 11940 KB Output is correct
129 Correct 58 ms 11404 KB Output is correct
130 Correct 76 ms 11460 KB Output is correct
131 Correct 68 ms 11544 KB Output is correct
132 Correct 65 ms 11460 KB Output is correct
133 Correct 58 ms 11460 KB Output is correct
134 Correct 69 ms 11412 KB Output is correct
135 Correct 61 ms 11460 KB Output is correct
136 Correct 67 ms 11588 KB Output is correct
137 Correct 55 ms 11452 KB Output is correct
138 Correct 68 ms 11404 KB Output is correct
139 Correct 66 ms 11408 KB Output is correct
140 Correct 53 ms 11416 KB Output is correct
141 Correct 52 ms 11544 KB Output is correct
142 Correct 130 ms 16656 KB Output is correct
143 Correct 125 ms 16720 KB Output is correct
144 Correct 148 ms 16800 KB Output is correct
145 Correct 137 ms 16712 KB Output is correct
146 Correct 122 ms 16584 KB Output is correct
147 Correct 130 ms 16452 KB Output is correct
148 Correct 118 ms 16376 KB Output is correct
149 Correct 119 ms 16276 KB Output is correct
150 Correct 121 ms 16128 KB Output is correct
151 Correct 111 ms 15680 KB Output is correct
152 Correct 50 ms 11468 KB Output is correct
153 Correct 135 ms 16644 KB Output is correct
154 Correct 132 ms 16532 KB Output is correct
155 Correct 132 ms 16416 KB Output is correct
156 Correct 127 ms 16376 KB Output is correct
157 Correct 122 ms 16208 KB Output is correct
158 Correct 122 ms 16260 KB Output is correct
159 Correct 117 ms 15560 KB Output is correct
160 Correct 49 ms 11592 KB Output is correct
161 Correct 158 ms 14076 KB Output is correct
162 Correct 169 ms 14020 KB Output is correct
163 Correct 167 ms 13968 KB Output is correct
164 Correct 170 ms 14024 KB Output is correct
165 Correct 157 ms 13928 KB Output is correct
166 Correct 59 ms 11408 KB Output is correct
167 Correct 129 ms 13968 KB Output is correct
168 Correct 89 ms 13908 KB Output is correct
169 Correct 94 ms 13720 KB Output is correct
170 Correct 95 ms 13588 KB Output is correct
171 Correct 99 ms 14104 KB Output is correct
172 Correct 122 ms 14024 KB Output is correct
173 Correct 196 ms 14004 KB Output is correct
174 Correct 177 ms 14036 KB Output is correct
175 Correct 172 ms 13972 KB Output is correct
176 Correct 131 ms 13624 KB Output is correct