oj.uz

Submission #1003289

# Submission time Handle Problem Language Result Execution time Memory
1003289 2024-06-20T08:35:46 Z 12345678 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 100 ms 16000 KB 
#include <bits/stdc++.h>

using namespace std;

const int nx=1e5+5, kx=17, inf=2e9;

int n, k, a[nx], b[nx], pa[nx][kx], mx, vl;

struct range
{
    int l, r;
    range(int l, int r): l(l), r(r){}
    bool operator< (const range &o) const
    {
        if (r==o.r) return l<o.l;
        return r<o.r;
    }
};
vector<range> v;
set<range> cur;

int query(int u, int limit)
{
    int res=0;
    if (limit==inf) limit--;
    for (int i=kx-1; i>=0; i--) if (v[pa[u][i]].r<=limit) res+=(1<<i), u=pa[u][i];
    return res;
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>k;
    v.push_back(range(0, 0));
    for (int i=1; i<=n; i++) cin>>a[i]>>b[i], v.push_back(range(a[i], b[i])), pa[i][0]=n+1;
    v.push_back(range({inf, inf}));
    sort(v.begin(), v.end());
    int lst=0;
    for (int i=1; i<=n+1; i++)
    {
        mx=max(mx, v[i].l);
        while (lst<=n+1&&v[lst].r<=mx) pa[lst++][0]=i;
    }
    for (int i=1; i<kx; i++) for (int j=0; j<=n+1; j++) pa[j][i]=pa[pa[j][i-1]][i-1];
    vl=query(0, inf);
    if (vl<k) return cout<<-1, 0;
    cur.insert(range(0, 0));
    for (int i=1; i<=n; i++)
    {
        if (!k) continue;
        auto itr=cur.upper_bound(range(a[i], b[i]));
        if (itr!=cur.end()&&itr->l<b[i]) continue;
        if (prev(itr)->r>a[i]) continue;
        int tmp=vl, pidx=lower_bound(v.begin(), v.end(), *prev(itr))-v.begin(), cidx=lower_bound(v.begin(), v.end(), range(a[i], b[i]))-v.begin();
        tmp-=query(pidx, (itr==cur.end())?inf:itr->l);
        tmp+=query(pidx, a[i]);
        tmp+=query(cidx, (itr==cur.end())?inf:itr->l);
        //cout<<"vl "<<i<<' '<<tmp<<'\n';
        if (tmp>=k-1)
        {
            k--;
            cur.insert(range(a[i], b[i]));
            vl=tmp;
            cout<<i<<'\n';
        }
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 68 ms 15372 KB Output is correct
5 Correct 65 ms 15056 KB Output is correct
6 Correct 79 ms 14852 KB Output is correct
7 Correct 58 ms 14540 KB Output is correct
8 Correct 67 ms 15340 KB Output is correct
9 Correct 65 ms 15092 KB Output is correct
10 Correct 63 ms 14796 KB Output is correct
11 Correct 73 ms 14544 KB Output is correct
12 Correct 53 ms 13516 KB Output is correct
13 Correct 54 ms 13304 KB Output is correct
14 Correct 50 ms 13256 KB Output is correct
15 Correct 56 ms 13004 KB Output is correct
16 Correct 35 ms 11472 KB Output is correct
17 Correct 30 ms 11212 KB Output is correct
18 Correct 31 ms 10996 KB Output is correct
19 Correct 28 ms 10724 KB Output is correct
20 Correct 25 ms 10708 KB Output is correct
21 Correct 22 ms 10652 KB Output is correct
22 Correct 27 ms 10708 KB Output is correct
23 Correct 26 ms 10508 KB Output is correct
24 Correct 26 ms 10696 KB Output is correct
25 Correct 26 ms 10712 KB Output is correct
26 Correct 27 ms 10700 KB Output is correct
27 Correct 24 ms 10532 KB Output is correct
28 Correct 21 ms 10704 KB Output is correct
29 Correct 22 ms 10708 KB Output is correct
30 Correct 23 ms 10712 KB Output is correct
31 Correct 25 ms 10712 KB Output is correct
32 Correct 23 ms 10712 KB Output is correct
33 Correct 25 ms 10712 KB Output is correct
34 Correct 39 ms 12272 KB Output is correct
35 Correct 34 ms 11588 KB Output is correct
36 Correct 27 ms 10960 KB Output is correct
37 Correct 49 ms 13128 KB Output is correct
38 Correct 49 ms 13000 KB Output is correct
39 Correct 47 ms 13000 KB Output is correct
40 Correct 57 ms 12916 KB Output is correct
41 Correct 57 ms 12628 KB Output is correct
42 Correct 32 ms 10704 KB Output is correct
43 Correct 52 ms 13008 KB Output is correct
44 Correct 60 ms 12812 KB Output is correct
45 Correct 51 ms 12820 KB Output is correct
46 Correct 47 ms 12748 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 416 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 416 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 608 KB Output is correct
29 Correct 1 ms 604 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 2 ms 604 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 1 ms 780 KB Output is correct
34 Correct 1 ms 736 KB Output is correct
35 Correct 3 ms 856 KB Output is correct
36 Correct 2 ms 860 KB Output is correct
37 Correct 2 ms 860 KB Output is correct
38 Correct 1 ms 824 KB Output is correct
39 Correct 2 ms 872 KB Output is correct
40 Correct 3 ms 856 KB Output is correct
41 Correct 2 ms 876 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 2 ms 600 KB Output is correct
44 Correct 1 ms 604 KB Output is correct
45 Correct 2 ms 604 KB Output is correct
46 Correct 1 ms 604 KB Output is correct
47 Correct 1 ms 604 KB Output is correct
48 Correct 1 ms 604 KB Output is correct
49 Correct 2 ms 604 KB Output is correct
50 Correct 1 ms 604 KB Output is correct
51 Correct 1 ms 604 KB Output is correct
52 Correct 2 ms 604 KB Output is correct
53 Correct 1 ms 604 KB Output is correct
54 Correct 1 ms 604 KB Output is correct
55 Correct 2 ms 952 KB Output is correct
56 Correct 3 ms 872 KB Output is correct
57 Correct 3 ms 876 KB Output is correct
58 Correct 3 ms 860 KB Output is correct
59 Correct 2 ms 860 KB Output is correct
60 Correct 2 ms 860 KB Output is correct
61 Correct 2 ms 756 KB Output is correct
62 Correct 2 ms 856 KB Output is correct
63 Correct 2 ms 860 KB Output is correct
64 Correct 1 ms 604 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 68 ms 15372 KB Output is correct
5 Correct 65 ms 15056 KB Output is correct
6 Correct 79 ms 14852 KB Output is correct
7 Correct 58 ms 14540 KB Output is correct
8 Correct 67 ms 15340 KB Output is correct
9 Correct 65 ms 15092 KB Output is correct
10 Correct 63 ms 14796 KB Output is correct
11 Correct 73 ms 14544 KB Output is correct
12 Correct 53 ms 13516 KB Output is correct
13 Correct 54 ms 13304 KB Output is correct
14 Correct 50 ms 13256 KB Output is correct
15 Correct 56 ms 13004 KB Output is correct
16 Correct 35 ms 11472 KB Output is correct
17 Correct 30 ms 11212 KB Output is correct
18 Correct 31 ms 10996 KB Output is correct
19 Correct 28 ms 10724 KB Output is correct
20 Correct 25 ms 10708 KB Output is correct
21 Correct 22 ms 10652 KB Output is correct
22 Correct 27 ms 10708 KB Output is correct
23 Correct 26 ms 10508 KB Output is correct
24 Correct 26 ms 10696 KB Output is correct
25 Correct 26 ms 10712 KB Output is correct
26 Correct 27 ms 10700 KB Output is correct
27 Correct 24 ms 10532 KB Output is correct
28 Correct 21 ms 10704 KB Output is correct
29 Correct 22 ms 10708 KB Output is correct
30 Correct 23 ms 10712 KB Output is correct
31 Correct 25 ms 10712 KB Output is correct
32 Correct 23 ms 10712 KB Output is correct
33 Correct 25 ms 10712 KB Output is correct
34 Correct 39 ms 12272 KB Output is correct
35 Correct 34 ms 11588 KB Output is correct
36 Correct 27 ms 10960 KB Output is correct
37 Correct 49 ms 13128 KB Output is correct
38 Correct 49 ms 13000 KB Output is correct
39 Correct 47 ms 13000 KB Output is correct
40 Correct 57 ms 12916 KB Output is correct
41 Correct 57 ms 12628 KB Output is correct
42 Correct 32 ms 10704 KB Output is correct
43 Correct 52 ms 13008 KB Output is correct
44 Correct 60 ms 12812 KB Output is correct
45 Correct 51 ms 12820 KB Output is correct
46 Correct 47 ms 12748 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 604 KB Output is correct
59 Correct 0 ms 468 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 0 ms 348 KB Output is correct
67 Correct 0 ms 348 KB Output is correct
68 Correct 0 ms 348 KB Output is correct
69 Correct 0 ms 416 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Correct 0 ms 348 KB Output is correct
74 Correct 1 ms 608 KB Output is correct
75 Correct 1 ms 604 KB Output is correct
76 Correct 1 ms 604 KB Output is correct
77 Correct 2 ms 604 KB Output is correct
78 Correct 1 ms 604 KB Output is correct
79 Correct 1 ms 780 KB Output is correct
80 Correct 1 ms 736 KB Output is correct
81 Correct 3 ms 856 KB Output is correct
82 Correct 2 ms 860 KB Output is correct
83 Correct 2 ms 860 KB Output is correct
84 Correct 1 ms 824 KB Output is correct
85 Correct 2 ms 872 KB Output is correct
86 Correct 3 ms 856 KB Output is correct
87 Correct 2 ms 876 KB Output is correct
88 Correct 1 ms 600 KB Output is correct
89 Correct 2 ms 600 KB Output is correct
90 Correct 1 ms 604 KB Output is correct
91 Correct 2 ms 604 KB Output is correct
92 Correct 1 ms 604 KB Output is correct
93 Correct 1 ms 604 KB Output is correct
94 Correct 1 ms 604 KB Output is correct
95 Correct 2 ms 604 KB Output is correct
96 Correct 1 ms 604 KB Output is correct
97 Correct 1 ms 604 KB Output is correct
98 Correct 2 ms 604 KB Output is correct
99 Correct 1 ms 604 KB Output is correct
100 Correct 1 ms 604 KB Output is correct
101 Correct 2 ms 952 KB Output is correct
102 Correct 3 ms 872 KB Output is correct
103 Correct 3 ms 876 KB Output is correct
104 Correct 3 ms 860 KB Output is correct
105 Correct 2 ms 860 KB Output is correct
106 Correct 2 ms 860 KB Output is correct
107 Correct 2 ms 756 KB Output is correct
108 Correct 2 ms 856 KB Output is correct
109 Correct 2 ms 860 KB Output is correct
110 Correct 1 ms 604 KB Output is correct
111 Correct 32 ms 10712 KB Output is correct
112 Correct 31 ms 10712 KB Output is correct
113 Correct 29 ms 10712 KB Output is correct
114 Correct 29 ms 10712 KB Output is correct
115 Correct 27 ms 10712 KB Output is correct
116 Correct 26 ms 10616 KB Output is correct
117 Correct 25 ms 10700 KB Output is correct
118 Correct 100 ms 15308 KB Output is correct
119 Correct 95 ms 14880 KB Output is correct
120 Correct 69 ms 13000 KB Output is correct
121 Correct 27 ms 10516 KB Output is correct
122 Correct 96 ms 13404 KB Output is correct
123 Correct 79 ms 13324 KB Output is correct
124 Correct 64 ms 12964 KB Output is correct
125 Correct 30 ms 10712 KB Output is correct
126 Correct 52 ms 11232 KB Output is correct
127 Correct 47 ms 11212 KB Output is correct
128 Correct 45 ms 10964 KB Output is correct
129 Correct 27 ms 10712 KB Output is correct
130 Correct 38 ms 10700 KB Output is correct
131 Correct 36 ms 10712 KB Output is correct
132 Correct 34 ms 10712 KB Output is correct
133 Correct 26 ms 10704 KB Output is correct
134 Correct 33 ms 10708 KB Output is correct
135 Correct 30 ms 10708 KB Output is correct
136 Correct 30 ms 10712 KB Output is correct
137 Correct 26 ms 10680 KB Output is correct
138 Correct 30 ms 10512 KB Output is correct
139 Correct 29 ms 10700 KB Output is correct
140 Correct 26 ms 10712 KB Output is correct
141 Correct 25 ms 10744 KB Output is correct
142 Correct 71 ms 15820 KB Output is correct
143 Correct 72 ms 15824 KB Output is correct
144 Correct 74 ms 16000 KB Output is correct
145 Correct 69 ms 15816 KB Output is correct
146 Correct 69 ms 15560 KB Output is correct
147 Correct 66 ms 15560 KB Output is correct
148 Correct 67 ms 15304 KB Output is correct
149 Correct 85 ms 15308 KB Output is correct
150 Correct 63 ms 15304 KB Output is correct
151 Correct 74 ms 14792 KB Output is correct
152 Correct 21 ms 10708 KB Output is correct
153 Correct 70 ms 15764 KB Output is correct
154 Correct 71 ms 15616 KB Output is correct
155 Correct 67 ms 15564 KB Output is correct
156 Correct 67 ms 15564 KB Output is correct
157 Correct 69 ms 15332 KB Output is correct
158 Correct 67 ms 15308 KB Output is correct
159 Correct 61 ms 14576 KB Output is correct
160 Correct 20 ms 10700 KB Output is correct
161 Correct 72 ms 13124 KB Output is correct
162 Correct 69 ms 13008 KB Output is correct
163 Correct 63 ms 13004 KB Output is correct
164 Correct 60 ms 12748 KB Output is correct
165 Correct 60 ms 12740 KB Output is correct
166 Correct 24 ms 10512 KB Output is correct
167 Correct 51 ms 13008 KB Output is correct
168 Correct 51 ms 13008 KB Output is correct
169 Correct 51 ms 12824 KB Output is correct
170 Correct 46 ms 12672 KB Output is correct
171 Correct 45 ms 12496 KB Output is correct
172 Correct 55 ms 13260 KB Output is correct
173 Correct 76 ms 13056 KB Output is correct
174 Correct 79 ms 13060 KB Output is correct
175 Correct 76 ms 13004 KB Output is correct
176 Correct 63 ms 12496 KB Output is correct