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답안 #537523

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
537523 2022-03-15T07:42:19 Z someone Event Hopping 2 (JOI21_event2) C++14
100 / 100
 210 ms 27844 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

# 결과 실행 시간 메모리 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 127 ms 26600 KB Output is correct
5 Correct 125 ms 26112 KB Output is correct
6 Correct 99 ms 25664 KB Output is correct
7 Correct 95 ms 25116 KB Output is correct
8 Correct 120 ms 26368 KB Output is correct
9 Correct 118 ms 26108 KB Output is correct
10 Correct 102 ms 25752 KB Output is correct
11 Correct 93 ms 24976 KB Output is correct
12 Correct 97 ms 23636 KB Output is correct
13 Correct 96 ms 23528 KB Output is correct
14 Correct 87 ms 23288 KB Output is correct
15 Correct 84 ms 22852 KB Output is correct
16 Correct 65 ms 20284 KB Output is correct
17 Correct 77 ms 20168 KB Output is correct
18 Correct 61 ms 20080 KB Output is correct
19 Correct 54 ms 19384 KB Output is correct
20 Correct 54 ms 19432 KB Output is correct
21 Correct 59 ms 20328 KB Output is correct
22 Correct 66 ms 20256 KB Output is correct
23 Correct 54 ms 20172 KB Output is correct
24 Correct 57 ms 20260 KB Output is correct
25 Correct 57 ms 20252 KB Output is correct
26 Correct 57 ms 20176 KB Output is correct
27 Correct 56 ms 20248 KB Output is correct
28 Correct 63 ms 20228 KB Output is correct
29 Correct 61 ms 20176 KB Output is correct
30 Correct 74 ms 20252 KB Output is correct
31 Correct 82 ms 20216 KB Output is correct
32 Correct 74 ms 20156 KB Output is correct
33 Correct 84 ms 20176 KB Output is correct
34 Correct 112 ms 22888 KB Output is correct
35 Correct 67 ms 22000 KB Output is correct
36 Correct 55 ms 21052 KB Output is correct
37 Correct 92 ms 24000 KB Output is correct
38 Correct 93 ms 23844 KB Output is correct
39 Correct 86 ms 23664 KB Output is correct
40 Correct 92 ms 23520 KB Output is correct
41 Correct 91 ms 23408 KB Output is correct
42 Correct 82 ms 20232 KB Output is correct
43 Correct 94 ms 23884 KB Output is correct
44 Correct 96 ms 23736 KB Output is correct
45 Correct 93 ms 23564 KB Output is correct
46 Correct 116 ms 23356 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 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 1 ms 340 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 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 1 ms 340 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 2 ms 980 KB Output is correct
29 Correct 2 ms 980 KB Output is correct
30 Correct 2 ms 980 KB Output is correct
31 Correct 3 ms 980 KB Output is correct
32 Correct 3 ms 980 KB Output is correct
33 Correct 3 ms 980 KB Output is correct
34 Correct 3 ms 948 KB Output is correct
35 Correct 5 ms 1236 KB Output is correct
36 Correct 4 ms 1108 KB Output is correct
37 Correct 3 ms 1108 KB Output is correct
38 Correct 3 ms 980 KB Output is correct
39 Correct 4 ms 1108 KB Output is correct
40 Correct 3 ms 1108 KB Output is correct
41 Correct 3 ms 1108 KB Output is correct
42 Correct 4 ms 984 KB Output is correct
43 Correct 3 ms 980 KB Output is correct
44 Correct 2 ms 980 KB Output is correct
45 Correct 3 ms 1068 KB Output is correct
46 Correct 3 ms 980 KB Output is correct
47 Correct 3 ms 980 KB Output is correct
48 Correct 3 ms 924 KB Output is correct
49 Correct 2 ms 980 KB Output is correct
50 Correct 3 ms 980 KB Output is correct
51 Correct 3 ms 980 KB Output is correct
52 Correct 2 ms 980 KB Output is correct
53 Correct 3 ms 980 KB Output is correct
54 Correct 2 ms 972 KB Output is correct
55 Correct 3 ms 1236 KB Output is correct
56 Correct 4 ms 1236 KB Output is correct
57 Correct 4 ms 1232 KB Output is correct
58 Correct 3 ms 1236 KB Output is correct
59 Correct 3 ms 1236 KB Output is correct
60 Correct 3 ms 1232 KB Output is correct
61 Correct 3 ms 1108 KB Output is correct
62 Correct 3 ms 1108 KB Output is correct
63 Correct 3 ms 1108 KB Output is correct
64 Correct 2 ms 932 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 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 127 ms 26600 KB Output is correct
5 Correct 125 ms 26112 KB Output is correct
6 Correct 99 ms 25664 KB Output is correct
7 Correct 95 ms 25116 KB Output is correct
8 Correct 120 ms 26368 KB Output is correct
9 Correct 118 ms 26108 KB Output is correct
10 Correct 102 ms 25752 KB Output is correct
11 Correct 93 ms 24976 KB Output is correct
12 Correct 97 ms 23636 KB Output is correct
13 Correct 96 ms 23528 KB Output is correct
14 Correct 87 ms 23288 KB Output is correct
15 Correct 84 ms 22852 KB Output is correct
16 Correct 65 ms 20284 KB Output is correct
17 Correct 77 ms 20168 KB Output is correct
18 Correct 61 ms 20080 KB Output is correct
19 Correct 54 ms 19384 KB Output is correct
20 Correct 54 ms 19432 KB Output is correct
21 Correct 59 ms 20328 KB Output is correct
22 Correct 66 ms 20256 KB Output is correct
23 Correct 54 ms 20172 KB Output is correct
24 Correct 57 ms 20260 KB Output is correct
25 Correct 57 ms 20252 KB Output is correct
26 Correct 57 ms 20176 KB Output is correct
27 Correct 56 ms 20248 KB Output is correct
28 Correct 63 ms 20228 KB Output is correct
29 Correct 61 ms 20176 KB Output is correct
30 Correct 74 ms 20252 KB Output is correct
31 Correct 82 ms 20216 KB Output is correct
32 Correct 74 ms 20156 KB Output is correct
33 Correct 84 ms 20176 KB Output is correct
34 Correct 112 ms 22888 KB Output is correct
35 Correct 67 ms 22000 KB Output is correct
36 Correct 55 ms 21052 KB Output is correct
37 Correct 92 ms 24000 KB Output is correct
38 Correct 93 ms 23844 KB Output is correct
39 Correct 86 ms 23664 KB Output is correct
40 Correct 92 ms 23520 KB Output is correct
41 Correct 91 ms 23408 KB Output is correct
42 Correct 82 ms 20232 KB Output is correct
43 Correct 94 ms 23884 KB Output is correct
44 Correct 96 ms 23736 KB Output is correct
45 Correct 93 ms 23564 KB Output is correct
46 Correct 116 ms 23356 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 1 ms 340 KB Output is correct
51 Correct 1 ms 328 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 336 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 328 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 1 ms 332 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 324 KB Output is correct
65 Correct 1 ms 340 KB Output is correct
66 Correct 1 ms 340 KB Output is correct
67 Correct 1 ms 332 KB Output is correct
68 Correct 1 ms 340 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 1 ms 340 KB Output is correct
72 Correct 1 ms 340 KB Output is correct
73 Correct 1 ms 340 KB Output is correct
74 Correct 2 ms 980 KB Output is correct
75 Correct 2 ms 980 KB Output is correct
76 Correct 2 ms 980 KB Output is correct
77 Correct 3 ms 980 KB Output is correct
78 Correct 3 ms 980 KB Output is correct
79 Correct 3 ms 980 KB Output is correct
80 Correct 3 ms 948 KB Output is correct
81 Correct 5 ms 1236 KB Output is correct
82 Correct 4 ms 1108 KB Output is correct
83 Correct 3 ms 1108 KB Output is correct
84 Correct 3 ms 980 KB Output is correct
85 Correct 4 ms 1108 KB Output is correct
86 Correct 3 ms 1108 KB Output is correct
87 Correct 3 ms 1108 KB Output is correct
88 Correct 4 ms 984 KB Output is correct
89 Correct 3 ms 980 KB Output is correct
90 Correct 2 ms 980 KB Output is correct
91 Correct 3 ms 1068 KB Output is correct
92 Correct 3 ms 980 KB Output is correct
93 Correct 3 ms 980 KB Output is correct
94 Correct 3 ms 924 KB Output is correct
95 Correct 2 ms 980 KB Output is correct
96 Correct 3 ms 980 KB Output is correct
97 Correct 3 ms 980 KB Output is correct
98 Correct 2 ms 980 KB Output is correct
99 Correct 3 ms 980 KB Output is correct
100 Correct 2 ms 972 KB Output is correct
101 Correct 3 ms 1236 KB Output is correct
102 Correct 4 ms 1236 KB Output is correct
103 Correct 4 ms 1232 KB Output is correct
104 Correct 3 ms 1236 KB Output is correct
105 Correct 3 ms 1236 KB Output is correct
106 Correct 3 ms 1232 KB Output is correct
107 Correct 3 ms 1108 KB Output is correct
108 Correct 3 ms 1108 KB Output is correct
109 Correct 3 ms 1108 KB Output is correct
110 Correct 2 ms 932 KB Output is correct
111 Correct 59 ms 20268 KB Output is correct
112 Correct 61 ms 20264 KB Output is correct
113 Correct 59 ms 20248 KB Output is correct
114 Correct 61 ms 20240 KB Output is correct
115 Correct 56 ms 20260 KB Output is correct
116 Correct 73 ms 20252 KB Output is correct
117 Correct 74 ms 20256 KB Output is correct
118 Correct 210 ms 27356 KB Output is correct
119 Correct 178 ms 26612 KB Output is correct
120 Correct 111 ms 23704 KB Output is correct
121 Correct 146 ms 20244 KB Output is correct
122 Correct 150 ms 24612 KB Output is correct
123 Correct 155 ms 24128 KB Output is correct
124 Correct 121 ms 23696 KB Output is correct
125 Correct 148 ms 20172 KB Output is correct
126 Correct 82 ms 21164 KB Output is correct
127 Correct 94 ms 21108 KB Output is correct
128 Correct 80 ms 21028 KB Output is correct
129 Correct 133 ms 20244 KB Output is correct
130 Correct 64 ms 20344 KB Output is correct
131 Correct 65 ms 20256 KB Output is correct
132 Correct 81 ms 20328 KB Output is correct
133 Correct 101 ms 20248 KB Output is correct
134 Correct 61 ms 20236 KB Output is correct
135 Correct 60 ms 20304 KB Output is correct
136 Correct 71 ms 20232 KB Output is correct
137 Correct 91 ms 20172 KB Output is correct
138 Correct 59 ms 20196 KB Output is correct
139 Correct 61 ms 20156 KB Output is correct
140 Correct 58 ms 20168 KB Output is correct
141 Correct 74 ms 20256 KB Output is correct
142 Correct 132 ms 27788 KB Output is correct
143 Correct 121 ms 27844 KB Output is correct
144 Correct 117 ms 27840 KB Output is correct
145 Correct 96 ms 27708 KB Output is correct
146 Correct 103 ms 27580 KB Output is correct
147 Correct 119 ms 27404 KB Output is correct
148 Correct 134 ms 27408 KB Output is correct
149 Correct 111 ms 27116 KB Output is correct
150 Correct 123 ms 26984 KB Output is correct
151 Correct 102 ms 26304 KB Output is correct
152 Correct 70 ms 20164 KB Output is correct
153 Correct 114 ms 27840 KB Output is correct
154 Correct 109 ms 27712 KB Output is correct
155 Correct 101 ms 27456 KB Output is correct
156 Correct 117 ms 27376 KB Output is correct
157 Correct 118 ms 27168 KB Output is correct
158 Correct 106 ms 27108 KB Output is correct
159 Correct 112 ms 26252 KB Output is correct
160 Correct 65 ms 20172 KB Output is correct
161 Correct 174 ms 24048 KB Output is correct
162 Correct 164 ms 23880 KB Output is correct
163 Correct 126 ms 23724 KB Output is correct
164 Correct 159 ms 23560 KB Output is correct
165 Correct 144 ms 23412 KB Output is correct
166 Correct 67 ms 20252 KB Output is correct
167 Correct 113 ms 23828 KB Output is correct
168 Correct 132 ms 23744 KB Output is correct
169 Correct 104 ms 23544 KB Output is correct
170 Correct 113 ms 23372 KB Output is correct
171 Correct 91 ms 23336 KB Output is correct
172 Correct 94 ms 24000 KB Output is correct
173 Correct 172 ms 24080 KB Output is correct
174 Correct 169 ms 24064 KB Output is correct
175 Correct 176 ms 23976 KB Output is correct
176 Correct 147 ms 23208 KB Output is correct