oj.uz

Submission #537526

# Submission time Handle Problem Language Result Execution time Memory
537526 2022-03-15T07:43:14 Z someone Event Hopping 2 (JOI21_event2) C++14
100 / 100
 173 ms 16588 KB 
#include <bits/stdc++.h>
//#define int long long
using namespace std;

struct Inter {
    int deb, fin, id;
    
    bool operator <(const Inter& other) const {
        if(deb == other.deb)
            return fin < other.fin;
        return deb < other.deb;
    }
};

const int N = 1e5 + 42, T = 17, INF = 1e9 + 42;

set<Inter> ans;
vector<int> toPrint;
Inter inter[N], inter2[N];
int n, k, nb = 0, bl[T][N];

int getNb(int a, int b) {
    int ans = 0;
    for(int i = T-1; i > -1; i--)
        if(inter[bl[i][a]].fin <= inter[b].deb)
            a = bl[i][a], ans += (1 << i);
    return ans;
}

void tryInsert(int i) {
    if(((int)ans.size()) == k)
        return;
    auto it = ans.lower_bound(inter[i]);
    if(inter[i].fin > (*it).deb && (*it).fin > inter[i].deb)
        return;
    int aft = (*it).id;
    it--;
    if(inter[i].fin > (*it).deb && (*it).fin > inter[i].deb)
        return;
    int pre = (*it).id,
        ch = getNb(pre, i) + getNb(i, aft) + 1 - getNb(pre, aft);
    if(nb + ch >= k) {
        nb += ch;
        toPrint.push_back(i+1);
        ans.insert(inter[i]);
    }
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n >> k;
    for(int i = 0; i < n; i++)
        cin >> inter[i].deb >> inter[i].fin;
    inter[n].deb = (inter[n].fin = -INF) - 1;
    inter[n+1].deb = (inter[n+1].fin = INF) - 1;
    n += 2;
    for(int i = 0; i < n; i++)
        inter[i].id = i;
    
    for(int i = 0; i < n; i++)
        inter2[i].id = i,
        inter2[i].deb = inter[i].deb,
        inter2[i].fin = inter[i].fin;
    
    sort(inter, inter + n,
    [](Inter a, Inter b) {
        return a.deb > b.deb;
    });
    sort(inter2, inter2 + n,
    [](Inter a, Inter b) {
        return a.fin > b.fin;
    });
    
    int imin = -1;
    for(int i = 0, j = 0; i < n; i++) {
        while(j < n && inter[j].deb >= inter2[i].fin) {
            if(imin == -1 || inter[j].fin < inter[imin].fin)
                imin = j;
            j++;
        }
        bl[0][inter2[i].id] = inter[imin].id;
    }
    bl[0][n-1] = n-1;
    
    for(int i = 1; i < T; i++)
        for(int j = 0; j < n; j++)
            bl[i][j] = bl[i-1][bl[i-1][j]];
    
    sort(inter, inter + n,
    [](Inter a, Inter b) {
        return a.id < b.id;
    });
    n -= 2;
    k += 2;
    ans.insert(inter[n]);
    ans.insert(inter[n+1]);
    nb = 2 + getNb(n, n+1);
    for(int i = 0; i < n; i++)
        tryInsert(i);
    
    if(k-2 == (int)toPrint.size()) {
        for(int i : toPrint)
            cout << i << '\n';
    } else {
        cout << "-1";
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 388 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 124 ms 16044 KB Output is correct
5 Correct 112 ms 15732 KB Output is correct
6 Correct 104 ms 15260 KB Output is correct
7 Correct 118 ms 14680 KB Output is correct
8 Correct 119 ms 15956 KB Output is correct
9 Correct 107 ms 15716 KB Output is correct
10 Correct 96 ms 15268 KB Output is correct
11 Correct 98 ms 14688 KB Output is correct
12 Correct 92 ms 13432 KB Output is correct
13 Correct 90 ms 13288 KB Output is correct
14 Correct 87 ms 13064 KB Output is correct
15 Correct 80 ms 12636 KB Output is correct
16 Correct 60 ms 10216 KB Output is correct
17 Correct 57 ms 10088 KB Output is correct
18 Correct 57 ms 9972 KB Output is correct
19 Correct 50 ms 9416 KB Output is correct
20 Correct 55 ms 9424 KB Output is correct
21 Correct 45 ms 9344 KB Output is correct
22 Correct 45 ms 9244 KB Output is correct
23 Correct 43 ms 9300 KB Output is correct
24 Correct 41 ms 9288 KB Output is correct
25 Correct 46 ms 9300 KB Output is correct
26 Correct 47 ms 9296 KB Output is correct
27 Correct 57 ms 9232 KB Output is correct
28 Correct 54 ms 9292 KB Output is correct
29 Correct 51 ms 9192 KB Output is correct
30 Correct 50 ms 9240 KB Output is correct
31 Correct 49 ms 9264 KB Output is correct
32 Correct 50 ms 9292 KB Output is correct
33 Correct 56 ms 9308 KB Output is correct
34 Correct 73 ms 11780 KB Output is correct
35 Correct 52 ms 10956 KB Output is correct
36 Correct 45 ms 10100 KB Output is correct
37 Correct 81 ms 12816 KB Output is correct
38 Correct 83 ms 12760 KB Output is correct
39 Correct 84 ms 12652 KB Output is correct
40 Correct 86 ms 12484 KB Output is correct
41 Correct 77 ms 12304 KB Output is correct
42 Correct 52 ms 9304 KB Output is correct
43 Correct 91 ms 12716 KB Output is correct
44 Correct 96 ms 12532 KB Output is correct
45 Correct 89 ms 12508 KB Output is correct
46 Correct 73 ms 12356 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 2 ms 596 KB Output is correct
29 Correct 2 ms 668 KB Output is correct
30 Correct 2 ms 596 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 2 ms 596 KB Output is correct
33 Correct 2 ms 596 KB Output is correct
34 Correct 2 ms 596 KB Output is correct
35 Correct 3 ms 852 KB Output is correct
36 Correct 3 ms 852 KB Output is correct
37 Correct 3 ms 724 KB Output is correct
38 Correct 3 ms 596 KB Output is correct
39 Correct 4 ms 852 KB Output is correct
40 Correct 4 ms 724 KB Output is correct
41 Correct 4 ms 820 KB Output is correct
42 Correct 3 ms 596 KB Output is correct
43 Correct 3 ms 724 KB Output is correct
44 Correct 4 ms 724 KB Output is correct
45 Correct 3 ms 724 KB Output is correct
46 Correct 3 ms 596 KB Output is correct
47 Correct 2 ms 596 KB Output is correct
48 Correct 2 ms 596 KB Output is correct
49 Correct 2 ms 596 KB Output is correct
50 Correct 2 ms 596 KB Output is correct
51 Correct 2 ms 596 KB Output is correct
52 Correct 2 ms 688 KB Output is correct
53 Correct 2 ms 596 KB Output is correct
54 Correct 2 ms 596 KB Output is correct
55 Correct 3 ms 852 KB Output is correct
56 Correct 3 ms 852 KB Output is correct
57 Correct 3 ms 852 KB Output is correct
58 Correct 3 ms 852 KB Output is correct
59 Correct 3 ms 852 KB Output is correct
60 Correct 3 ms 852 KB Output is correct
61 Correct 4 ms 852 KB Output is correct
62 Correct 3 ms 852 KB Output is correct
63 Correct 3 ms 852 KB Output is correct
64 Correct 3 ms 596 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 388 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 124 ms 16044 KB Output is correct
5 Correct 112 ms 15732 KB Output is correct
6 Correct 104 ms 15260 KB Output is correct
7 Correct 118 ms 14680 KB Output is correct
8 Correct 119 ms 15956 KB Output is correct
9 Correct 107 ms 15716 KB Output is correct
10 Correct 96 ms 15268 KB Output is correct
11 Correct 98 ms 14688 KB Output is correct
12 Correct 92 ms 13432 KB Output is correct
13 Correct 90 ms 13288 KB Output is correct
14 Correct 87 ms 13064 KB Output is correct
15 Correct 80 ms 12636 KB Output is correct
16 Correct 60 ms 10216 KB Output is correct
17 Correct 57 ms 10088 KB Output is correct
18 Correct 57 ms 9972 KB Output is correct
19 Correct 50 ms 9416 KB Output is correct
20 Correct 55 ms 9424 KB Output is correct
21 Correct 45 ms 9344 KB Output is correct
22 Correct 45 ms 9244 KB Output is correct
23 Correct 43 ms 9300 KB Output is correct
24 Correct 41 ms 9288 KB Output is correct
25 Correct 46 ms 9300 KB Output is correct
26 Correct 47 ms 9296 KB Output is correct
27 Correct 57 ms 9232 KB Output is correct
28 Correct 54 ms 9292 KB Output is correct
29 Correct 51 ms 9192 KB Output is correct
30 Correct 50 ms 9240 KB Output is correct
31 Correct 49 ms 9264 KB Output is correct
32 Correct 50 ms 9292 KB Output is correct
33 Correct 56 ms 9308 KB Output is correct
34 Correct 73 ms 11780 KB Output is correct
35 Correct 52 ms 10956 KB Output is correct
36 Correct 45 ms 10100 KB Output is correct
37 Correct 81 ms 12816 KB Output is correct
38 Correct 83 ms 12760 KB Output is correct
39 Correct 84 ms 12652 KB Output is correct
40 Correct 86 ms 12484 KB Output is correct
41 Correct 77 ms 12304 KB Output is correct
42 Correct 52 ms 9304 KB Output is correct
43 Correct 91 ms 12716 KB Output is correct
44 Correct 96 ms 12532 KB Output is correct
45 Correct 89 ms 12508 KB Output is correct
46 Correct 73 ms 12356 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Correct 0 ms 340 KB Output is correct
52 Correct 0 ms 340 KB Output is correct
53 Correct 0 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 0 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 0 ms 340 KB Output is correct
58 Correct 0 ms 340 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 0 ms 340 KB Output is correct
61 Correct 0 ms 340 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 0 ms 340 KB Output is correct
66 Correct 0 ms 340 KB Output is correct
67 Correct 0 ms 340 KB Output is correct
68 Correct 1 ms 340 KB Output is correct
69 Correct 0 ms 340 KB Output is correct
70 Correct 0 ms 340 KB Output is correct
71 Correct 0 ms 340 KB Output is correct
72 Correct 1 ms 340 KB Output is correct
73 Correct 0 ms 340 KB Output is correct
74 Correct 2 ms 596 KB Output is correct
75 Correct 2 ms 668 KB Output is correct
76 Correct 2 ms 596 KB Output is correct
77 Correct 2 ms 596 KB Output is correct
78 Correct 2 ms 596 KB Output is correct
79 Correct 2 ms 596 KB Output is correct
80 Correct 2 ms 596 KB Output is correct
81 Correct 3 ms 852 KB Output is correct
82 Correct 3 ms 852 KB Output is correct
83 Correct 3 ms 724 KB Output is correct
84 Correct 3 ms 596 KB Output is correct
85 Correct 4 ms 852 KB Output is correct
86 Correct 4 ms 724 KB Output is correct
87 Correct 4 ms 820 KB Output is correct
88 Correct 3 ms 596 KB Output is correct
89 Correct 3 ms 724 KB Output is correct
90 Correct 4 ms 724 KB Output is correct
91 Correct 3 ms 724 KB Output is correct
92 Correct 3 ms 596 KB Output is correct
93 Correct 2 ms 596 KB Output is correct
94 Correct 2 ms 596 KB Output is correct
95 Correct 2 ms 596 KB Output is correct
96 Correct 2 ms 596 KB Output is correct
97 Correct 2 ms 596 KB Output is correct
98 Correct 2 ms 688 KB Output is correct
99 Correct 2 ms 596 KB Output is correct
100 Correct 2 ms 596 KB Output is correct
101 Correct 3 ms 852 KB Output is correct
102 Correct 3 ms 852 KB Output is correct
103 Correct 3 ms 852 KB Output is correct
104 Correct 3 ms 852 KB Output is correct
105 Correct 3 ms 852 KB Output is correct
106 Correct 3 ms 852 KB Output is correct
107 Correct 4 ms 852 KB Output is correct
108 Correct 3 ms 852 KB Output is correct
109 Correct 3 ms 852 KB Output is correct
110 Correct 3 ms 596 KB Output is correct
111 Correct 56 ms 9256 KB Output is correct
112 Correct 50 ms 9308 KB Output is correct
113 Correct 50 ms 9324 KB Output is correct
114 Correct 53 ms 9212 KB Output is correct
115 Correct 59 ms 9188 KB Output is correct
116 Correct 92 ms 9316 KB Output is correct
117 Correct 78 ms 9256 KB Output is correct
118 Correct 148 ms 16012 KB Output is correct
119 Correct 162 ms 15332 KB Output is correct
120 Correct 116 ms 12644 KB Output is correct
121 Correct 173 ms 9304 KB Output is correct
122 Correct 160 ms 13400 KB Output is correct
123 Correct 129 ms 12988 KB Output is correct
124 Correct 109 ms 12632 KB Output is correct
125 Correct 117 ms 9304 KB Output is correct
126 Correct 92 ms 10172 KB Output is correct
127 Correct 78 ms 10096 KB Output is correct
128 Correct 83 ms 9920 KB Output is correct
129 Correct 108 ms 9316 KB Output is correct
130 Correct 59 ms 9308 KB Output is correct
131 Correct 65 ms 9380 KB Output is correct
132 Correct 58 ms 9332 KB Output is correct
133 Correct 87 ms 9312 KB Output is correct
134 Correct 69 ms 9304 KB Output is correct
135 Correct 58 ms 9196 KB Output is correct
136 Correct 52 ms 9316 KB Output is correct
137 Correct 73 ms 9304 KB Output is correct
138 Correct 52 ms 9312 KB Output is correct
139 Correct 54 ms 9196 KB Output is correct
140 Correct 58 ms 9296 KB Output is correct
141 Correct 63 ms 9312 KB Output is correct
142 Correct 118 ms 16524 KB Output is correct
143 Correct 130 ms 16588 KB Output is correct
144 Correct 117 ms 16544 KB Output is correct
145 Correct 118 ms 16420 KB Output is correct
146 Correct 99 ms 16336 KB Output is correct
147 Correct 94 ms 16232 KB Output is correct
148 Correct 106 ms 15944 KB Output is correct
149 Correct 115 ms 15808 KB Output is correct
150 Correct 98 ms 15748 KB Output is correct
151 Correct 100 ms 15032 KB Output is correct
152 Correct 61 ms 9232 KB Output is correct
153 Correct 119 ms 16444 KB Output is correct
154 Correct 99 ms 16304 KB Output is correct
155 Correct 99 ms 16168 KB Output is correct
156 Correct 89 ms 15996 KB Output is correct
157 Correct 112 ms 15832 KB Output is correct
158 Correct 127 ms 15744 KB Output is correct
159 Correct 86 ms 14964 KB Output is correct
160 Correct 65 ms 9292 KB Output is correct
161 Correct 125 ms 12924 KB Output is correct
162 Correct 102 ms 12700 KB Output is correct
163 Correct 103 ms 12640 KB Output is correct
164 Correct 113 ms 12472 KB Output is correct
165 Correct 93 ms 12308 KB Output is correct
166 Correct 59 ms 9292 KB Output is correct
167 Correct 93 ms 12772 KB Output is correct
168 Correct 85 ms 12628 KB Output is correct
169 Correct 83 ms 12504 KB Output is correct
170 Correct 81 ms 12340 KB Output is correct
171 Correct 79 ms 12836 KB Output is correct
172 Correct 87 ms 12872 KB Output is correct
173 Correct 119 ms 12904 KB Output is correct
174 Correct 143 ms 12812 KB Output is correct
175 Correct 119 ms 12800 KB Output is correct
176 Correct 87 ms 12136 KB Output is correct