oj.uz

답안 #931491

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
931491 2024-02-21T23:28:28 Z ksujay2 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 480 ms 45356 KB 
#include <bits/stdc++.h>
using namespace std;
const int MXN = 100001;
const int MXLG = 19;
int l[MXN], r[MXN];
int ljmp[MXN][MXLG], rjmp[MXN][MXLG];
int main() {
    ios::sync_with_stdio(false), cin.tie(nullptr);
    int N, K; cin >> N >> K;
    for(int i = 1; i <= N; i++) {
        cin >> l[i] >> r[i];
    }
    {
        map<int, vector<int>> eve;
        for(int i = 1; i <= N; i++) eve[l[i]].push_back(i), eve[r[i]].push_back(-i);
        multiset<pair<int, int>> rs;
        for(int i = 1; i <= N; i++) rs.insert({r[i], i});
        for(auto [u, v] : eve) {
            for(int i : v) {
                if(i < 0) {
                    rjmp[-i][0] = (rs.size() > 0) ? (*rs.begin()).second : 0;
                }
            }
            for(int i : v) {
                if(i > 0) {
                    rs.erase(rs.find({r[i], i}));
                }
            }
        }
    }
    {
        map<int, vector<int>> eve;
        for(int i = 1; i <= N; i++) eve[-l[i]].push_back(-i), eve[-r[i]].push_back(i);
        multiset<pair<int, int>> ls;
        for(int i = 1; i <= N; i++) ls.insert({l[i], i});
        for(auto [u, v] : eve) {
            for(int i : v) {
                if(i < 0) {
                    ljmp[-i][0] = (ls.size() > 0) ? (*ls.rbegin()).second : 0;
                }
            }
            for(int i : v) {
                if(i > 0) {
                    ls.erase(ls.find({l[i], i}));
                }
            }
        }
    }
    for(int i = 0; i < MXLG - 1; i++) {
        for(int j = 1; j <= N; j++) {
            ljmp[j][i + 1] = ljmp[ljmp[j][i]][i];
            rjmp[j][i + 1] = rjmp[rjmp[j][i]][i];
        }
    }
    vector<int> ans;
    set<pair<int, int>> ls, rs;
    ls.insert({0, N});
    rs.insert({0, N});
    ls.insert({1e9+1, N});
    rs.insert({1e9+1, N});
    int curv = N;
    for(int i = 1; i <= N; i++) {
        auto [lb, pv1] = *prev(rs.upper_bound({r[i], N}));
        auto [rb, pv2] = *ls.lower_bound({l[i], 0});
        auto [firstr, _] = *rs.upper_bound({l[i], N});
        auto [firstl, _2] = *ls.upper_bound({l[i], N});
        if(l[i] < lb || rb < r[i] || firstr < firstl) {
            continue;
        }
        int lv = 0, rv = 0;
        int li = i, ri = i;
        for(int j = MXLG - 1; j >= 0; j--) {
            if(ljmp[li][j] != 0 && lb <= l[ljmp[li][j]]) {
                li = ljmp[li][j];
                lv += 1 << j;
            }
            if(rjmp[ri][j] != 0 && r[rjmp[ri][j]] <= rb) {
                ri = rjmp[ri][j];
                rv += 1 << j;
            }
        }
        if(curv - min(pv1, pv2) + lv + rv + 1 >= K) {
            ans.push_back(i);
            curv = curv - min(pv1, pv2) + lv + rv + 1;
            ls.insert({l[i], lv});
            rs.insert({r[i], rv});
        }
        if(ans.size() == K) break;
    }
    if(ans.size() == 0) cout << "-1\n";
    else {
        for(int i : ans) cout << i << "\n";    
    }
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:88:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   88 |         if(ans.size() == K) break;
      |            ~~~~~~~~~~~^~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 222 ms 43120 KB Output is correct
5 Correct 218 ms 43212 KB Output is correct
6 Correct 211 ms 43192 KB Output is correct
7 Correct 212 ms 43092 KB Output is correct
8 Correct 218 ms 43092 KB Output is correct
9 Correct 228 ms 43452 KB Output is correct
10 Correct 214 ms 43116 KB Output is correct
11 Correct 211 ms 43088 KB Output is correct
12 Correct 202 ms 42836 KB Output is correct
13 Correct 198 ms 42856 KB Output is correct
14 Correct 192 ms 42804 KB Output is correct
15 Correct 194 ms 43092 KB Output is correct
16 Correct 187 ms 42704 KB Output is correct
17 Correct 186 ms 42832 KB Output is correct
18 Correct 183 ms 42580 KB Output is correct
19 Correct 181 ms 42708 KB Output is correct
20 Correct 187 ms 42580 KB Output is correct
21 Correct 205 ms 42704 KB Output is correct
22 Correct 201 ms 42600 KB Output is correct
23 Correct 200 ms 42580 KB Output is correct
24 Correct 204 ms 42576 KB Output is correct
25 Correct 210 ms 42576 KB Output is correct
26 Correct 212 ms 42832 KB Output is correct
27 Correct 205 ms 42580 KB Output is correct
28 Correct 146 ms 42608 KB Output is correct
29 Correct 140 ms 42704 KB Output is correct
30 Correct 155 ms 42576 KB Output is correct
31 Correct 169 ms 43152 KB Output is correct
32 Correct 183 ms 42612 KB Output is correct
33 Correct 217 ms 42580 KB Output is correct
34 Correct 182 ms 42704 KB Output is correct
35 Correct 172 ms 42836 KB Output is correct
36 Correct 159 ms 42576 KB Output is correct
37 Correct 211 ms 42856 KB Output is correct
38 Correct 207 ms 42964 KB Output is correct
39 Correct 203 ms 42964 KB Output is correct
40 Correct 207 ms 43092 KB Output is correct
41 Correct 201 ms 42832 KB Output is correct
42 Correct 145 ms 42576 KB Output is correct
43 Correct 204 ms 43188 KB Output is correct
44 Correct 196 ms 42836 KB Output is correct
45 Correct 197 ms 42840 KB Output is correct
46 Correct 199 ms 43088 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 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 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 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 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 1 ms 2516 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 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 0 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 0 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 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 1 ms 2516 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 8 ms 5468 KB Output is correct
29 Correct 6 ms 5468 KB Output is correct
30 Correct 10 ms 5468 KB Output is correct
31 Correct 6 ms 5596 KB Output is correct
32 Correct 6 ms 5464 KB Output is correct
33 Correct 6 ms 5468 KB Output is correct
34 Correct 6 ms 5468 KB Output is correct
35 Correct 7 ms 5408 KB Output is correct
36 Correct 7 ms 5468 KB Output is correct
37 Correct 7 ms 5468 KB Output is correct
38 Correct 6 ms 5508 KB Output is correct
39 Correct 7 ms 5468 KB Output is correct
40 Correct 7 ms 5464 KB Output is correct
41 Correct 7 ms 5464 KB Output is correct
42 Correct 5 ms 5468 KB Output is correct
43 Correct 6 ms 5468 KB Output is correct
44 Correct 6 ms 5468 KB Output is correct
45 Correct 6 ms 5468 KB Output is correct
46 Correct 6 ms 5468 KB Output is correct
47 Correct 6 ms 5468 KB Output is correct
48 Correct 6 ms 5468 KB Output is correct
49 Correct 6 ms 5464 KB Output is correct
50 Correct 5 ms 5464 KB Output is correct
51 Correct 6 ms 5468 KB Output is correct
52 Correct 6 ms 5468 KB Output is correct
53 Correct 6 ms 5468 KB Output is correct
54 Correct 6 ms 5468 KB Output is correct
55 Correct 4 ms 5300 KB Output is correct
56 Correct 4 ms 5212 KB Output is correct
57 Correct 4 ms 5212 KB Output is correct
58 Correct 4 ms 5148 KB Output is correct
59 Correct 4 ms 5212 KB Output is correct
60 Correct 4 ms 5088 KB Output is correct
61 Correct 4 ms 5212 KB Output is correct
62 Correct 4 ms 5212 KB Output is correct
63 Correct 4 ms 5212 KB Output is correct
64 Correct 3 ms 5212 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 222 ms 43120 KB Output is correct
5 Correct 218 ms 43212 KB Output is correct
6 Correct 211 ms 43192 KB Output is correct
7 Correct 212 ms 43092 KB Output is correct
8 Correct 218 ms 43092 KB Output is correct
9 Correct 228 ms 43452 KB Output is correct
10 Correct 214 ms 43116 KB Output is correct
11 Correct 211 ms 43088 KB Output is correct
12 Correct 202 ms 42836 KB Output is correct
13 Correct 198 ms 42856 KB Output is correct
14 Correct 192 ms 42804 KB Output is correct
15 Correct 194 ms 43092 KB Output is correct
16 Correct 187 ms 42704 KB Output is correct
17 Correct 186 ms 42832 KB Output is correct
18 Correct 183 ms 42580 KB Output is correct
19 Correct 181 ms 42708 KB Output is correct
20 Correct 187 ms 42580 KB Output is correct
21 Correct 205 ms 42704 KB Output is correct
22 Correct 201 ms 42600 KB Output is correct
23 Correct 200 ms 42580 KB Output is correct
24 Correct 204 ms 42576 KB Output is correct
25 Correct 210 ms 42576 KB Output is correct
26 Correct 212 ms 42832 KB Output is correct
27 Correct 205 ms 42580 KB Output is correct
28 Correct 146 ms 42608 KB Output is correct
29 Correct 140 ms 42704 KB Output is correct
30 Correct 155 ms 42576 KB Output is correct
31 Correct 169 ms 43152 KB Output is correct
32 Correct 183 ms 42612 KB Output is correct
33 Correct 217 ms 42580 KB Output is correct
34 Correct 182 ms 42704 KB Output is correct
35 Correct 172 ms 42836 KB Output is correct
36 Correct 159 ms 42576 KB Output is correct
37 Correct 211 ms 42856 KB Output is correct
38 Correct 207 ms 42964 KB Output is correct
39 Correct 203 ms 42964 KB Output is correct
40 Correct 207 ms 43092 KB Output is correct
41 Correct 201 ms 42832 KB Output is correct
42 Correct 145 ms 42576 KB Output is correct
43 Correct 204 ms 43188 KB Output is correct
44 Correct 196 ms 42836 KB Output is correct
45 Correct 197 ms 42840 KB Output is correct
46 Correct 199 ms 43088 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 2396 KB Output is correct
52 Correct 1 ms 2396 KB Output is correct
53 Correct 1 ms 2392 KB Output is correct
54 Correct 1 ms 2396 KB Output is correct
55 Correct 1 ms 2396 KB Output is correct
56 Correct 1 ms 2396 KB Output is correct
57 Correct 0 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 0 ms 2396 KB Output is correct
62 Correct 1 ms 2396 KB Output is correct
63 Correct 1 ms 2396 KB Output is correct
64 Correct 1 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 1 ms 2516 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 8 ms 5468 KB Output is correct
75 Correct 6 ms 5468 KB Output is correct
76 Correct 10 ms 5468 KB Output is correct
77 Correct 6 ms 5596 KB Output is correct
78 Correct 6 ms 5464 KB Output is correct
79 Correct 6 ms 5468 KB Output is correct
80 Correct 6 ms 5468 KB Output is correct
81 Correct 7 ms 5408 KB Output is correct
82 Correct 7 ms 5468 KB Output is correct
83 Correct 7 ms 5468 KB Output is correct
84 Correct 6 ms 5508 KB Output is correct
85 Correct 7 ms 5468 KB Output is correct
86 Correct 7 ms 5464 KB Output is correct
87 Correct 7 ms 5464 KB Output is correct
88 Correct 5 ms 5468 KB Output is correct
89 Correct 6 ms 5468 KB Output is correct
90 Correct 6 ms 5468 KB Output is correct
91 Correct 6 ms 5468 KB Output is correct
92 Correct 6 ms 5468 KB Output is correct
93 Correct 6 ms 5468 KB Output is correct
94 Correct 6 ms 5468 KB Output is correct
95 Correct 6 ms 5464 KB Output is correct
96 Correct 5 ms 5464 KB Output is correct
97 Correct 6 ms 5468 KB Output is correct
98 Correct 6 ms 5468 KB Output is correct
99 Correct 6 ms 5468 KB Output is correct
100 Correct 6 ms 5468 KB Output is correct
101 Correct 4 ms 5300 KB Output is correct
102 Correct 4 ms 5212 KB Output is correct
103 Correct 4 ms 5212 KB Output is correct
104 Correct 4 ms 5148 KB Output is correct
105 Correct 4 ms 5212 KB Output is correct
106 Correct 4 ms 5088 KB Output is correct
107 Correct 4 ms 5212 KB Output is correct
108 Correct 4 ms 5212 KB Output is correct
109 Correct 4 ms 5212 KB Output is correct
110 Correct 3 ms 5212 KB Output is correct
111 Correct 480 ms 44628 KB Output is correct
112 Correct 470 ms 44624 KB Output is correct
113 Correct 458 ms 44668 KB Output is correct
114 Correct 469 ms 44884 KB Output is correct
115 Correct 427 ms 44628 KB Output is correct
116 Correct 456 ms 44784 KB Output is correct
117 Correct 423 ms 44628 KB Output is correct
118 Correct 469 ms 45356 KB Output is correct
119 Correct 438 ms 45140 KB Output is correct
120 Correct 411 ms 44892 KB Output is correct
121 Correct 359 ms 44884 KB Output is correct
122 Correct 418 ms 44884 KB Output is correct
123 Correct 441 ms 44884 KB Output is correct
124 Correct 417 ms 44740 KB Output is correct
125 Correct 328 ms 44624 KB Output is correct
126 Correct 418 ms 44548 KB Output is correct
127 Correct 422 ms 44628 KB Output is correct
128 Correct 417 ms 44880 KB Output is correct
129 Correct 345 ms 44624 KB Output is correct
130 Correct 439 ms 44548 KB Output is correct
131 Correct 419 ms 44632 KB Output is correct
132 Correct 462 ms 44628 KB Output is correct
133 Correct 378 ms 44540 KB Output is correct
134 Correct 418 ms 44632 KB Output is correct
135 Correct 411 ms 44528 KB Output is correct
136 Correct 423 ms 44628 KB Output is correct
137 Correct 393 ms 44628 KB Output is correct
138 Correct 393 ms 44556 KB Output is correct
139 Correct 446 ms 44716 KB Output is correct
140 Correct 395 ms 44628 KB Output is correct
141 Correct 408 ms 44628 KB Output is correct
142 Correct 199 ms 34128 KB Output is correct
143 Correct 201 ms 34128 KB Output is correct
144 Correct 201 ms 34132 KB Output is correct
145 Correct 164 ms 34296 KB Output is correct
146 Correct 173 ms 34300 KB Output is correct
147 Correct 163 ms 34128 KB Output is correct
148 Correct 161 ms 34216 KB Output is correct
149 Correct 160 ms 34200 KB Output is correct
150 Correct 156 ms 34128 KB Output is correct
151 Correct 152 ms 34040 KB Output is correct
152 Correct 125 ms 33900 KB Output is correct
153 Correct 169 ms 34248 KB Output is correct
154 Correct 168 ms 34128 KB Output is correct
155 Correct 174 ms 34480 KB Output is correct
156 Correct 180 ms 34144 KB Output is correct
157 Correct 163 ms 34148 KB Output is correct
158 Correct 178 ms 34444 KB Output is correct
159 Correct 163 ms 34132 KB Output is correct
160 Correct 124 ms 33620 KB Output is correct
161 Correct 418 ms 39332 KB Output is correct
162 Correct 374 ms 39412 KB Output is correct
163 Correct 387 ms 39344 KB Output is correct
164 Correct 354 ms 39252 KB Output is correct
165 Correct 359 ms 39192 KB Output is correct
166 Correct 143 ms 44624 KB Output is correct
167 Correct 194 ms 44680 KB Output is correct
168 Correct 193 ms 44884 KB Output is correct
169 Correct 192 ms 44884 KB Output is correct
170 Correct 204 ms 44896 KB Output is correct
171 Correct 203 ms 44092 KB Output is correct
172 Correct 203 ms 44760 KB Output is correct
173 Correct 344 ms 33984 KB Output is correct
174 Correct 369 ms 34132 KB Output is correct
175 Correct 334 ms 33956 KB Output is correct
176 Correct 302 ms 33748 KB Output is correct