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Submission #541285

# Submission time Handle Problem Language Result Execution time Memory
541285 2022-03-22T22:32:12 Z chonka Event Hopping 2 (JOI21_event2) C++
100 / 100
 315 ms 45572 KB 
#include<bits/stdc++.h>
using namespace std ;

// mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

#define MAXN 200007
#define LOG 18

int n , k , mx_coord ;
pair < int , int > a[ MAXN ] ;
vector < int > ans ;

set < int > s ;
map < int , int > w ;

int nxt[ LOG ][ MAXN ] ;

int f ( int st , int en ) {
    int ans = 0 ;
    for ( int i = LOG - 1 ; i >= 0 ; -- i ) {
        if ( nxt[ i ][ st ] <= en ) {
            ans += ( 1 << i ) ;
            st = nxt[ i ][ st ] ;
        }
    }
    return ans ;
}

void input ( ) {
    cin >> n >> k ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        cin >> a[ i ].first >> a[ i ].second ;
        s.insert ( a[ i ].first ) ;
        s.insert ( a[ i ].second ) ;
    }
    for ( auto val : s ) {
        w[ val ] = ++ mx_coord ;
    }
    for ( int i = 1 ; i <= n ; ++ i ) {
        a[ i ].first = w[ a[ i ].first ] ;
        a[ i ].second = w[ a[ i ].second ] ;
    }
}

set < pair < int , int > > act ;

void solve ( ) {
    for ( int i = 0 ; i < LOG ; ++ i ) {
        for ( int j = 1 ; j <= mx_coord ; ++ j ) {
            nxt[ i ][ j ] = MAXN ; 
        }
    }
    for ( int i = 1 ; i <= n ; ++ i ) {
        nxt[ 0 ][ a[ i ].first ] = min ( nxt[ 0 ][ a[ i ].first ] , a[ i ].second ) ;
    }
    for ( int i = mx_coord - 1 ; i >= 1 ; -- i ) {
        nxt[ 0 ][ i ] = min ( nxt[ 0 ][ i ] , nxt[ 0 ][ i + 1 ] ) ;
    }
    for ( int i = 1 ; i < LOG ; ++ i ) {
        for ( int j = 1 ; j <= mx_coord ; ++ j ) {
            if ( nxt[ i - 1 ][ j ] <= mx_coord ) {
                nxt[ i ][ j ] = nxt[ i - 1 ][ nxt[ i - 1 ][ j ] ] ;
            }
        }
    }
    act.insert ( { 1 , -1 } ) ;
    act.insert ( { mx_coord + 1 , 1 } ) ;
    int aux = f ( 1 , mx_coord + 1 ) ;
    if ( aux < k ) {
        cout << "-1\n" ;
        return ;
    }
    int cnt = 0 ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        auto it = act.upper_bound ( { a[ i ].first , MAXN } ) ;
        if ( it->first < a[ i ].second || it->second == -1 ) { continue ; }
        int en = it->first ;
        -- it ;
        int st = it->first;
        int hh = aux ;
        hh -= f ( st , en ) ;
        hh += f ( st , a[ i ].first ) + f ( a[ i ].second , en ) + 1 ;
        if ( hh >= k ) {
            ++ cnt ;
            ans.push_back ( i ) ;
            act.insert ( { a[ i ].first , 1 } ) ;
            act.insert ( { a[ i ].second , -1 } ) ;
            aux = hh ;
        }
        if ( cnt == k ) { break ; }
    }
    for ( auto x : ans ) {
        cout << x << "\n" ;
    }
}

int main ( ) {
    ios_base :: sync_with_stdio ( false ) ;
    cin.tie ( NULL ) ;
    int t = 1 ;
    // cin >> t ;
    while ( t -- ) {
        input ( ) ;
        solve ( ) ;
    }
    return 0 ;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 195 ms 43556 KB Output is correct
5 Correct 196 ms 45008 KB Output is correct
6 Correct 181 ms 44484 KB Output is correct
7 Correct 180 ms 43552 KB Output is correct
8 Correct 197 ms 45484 KB Output is correct
9 Correct 191 ms 44984 KB Output is correct
10 Correct 187 ms 44544 KB Output is correct
11 Correct 190 ms 43576 KB Output is correct
12 Correct 173 ms 41804 KB Output is correct
13 Correct 165 ms 41552 KB Output is correct
14 Correct 161 ms 41296 KB Output is correct
15 Correct 159 ms 40652 KB Output is correct
16 Correct 147 ms 37208 KB Output is correct
17 Correct 140 ms 37024 KB Output is correct
18 Correct 141 ms 36964 KB Output is correct
19 Correct 131 ms 36028 KB Output is correct
20 Correct 130 ms 36044 KB Output is correct
21 Correct 130 ms 35932 KB Output is correct
22 Correct 134 ms 35928 KB Output is correct
23 Correct 132 ms 35880 KB Output is correct
24 Correct 135 ms 35816 KB Output is correct
25 Correct 141 ms 35916 KB Output is correct
26 Correct 148 ms 35980 KB Output is correct
27 Correct 142 ms 35812 KB Output is correct
28 Correct 123 ms 35828 KB Output is correct
29 Correct 121 ms 35900 KB Output is correct
30 Correct 124 ms 35860 KB Output is correct
31 Correct 129 ms 35856 KB Output is correct
32 Correct 129 ms 35876 KB Output is correct
33 Correct 148 ms 36000 KB Output is correct
34 Correct 154 ms 39436 KB Output is correct
35 Correct 142 ms 38308 KB Output is correct
36 Correct 133 ms 37076 KB Output is correct
37 Correct 179 ms 41020 KB Output is correct
38 Correct 177 ms 40896 KB Output is correct
39 Correct 175 ms 40648 KB Output is correct
40 Correct 171 ms 40484 KB Output is correct
41 Correct 173 ms 40232 KB Output is correct
42 Correct 118 ms 35904 KB Output is correct
43 Correct 160 ms 40852 KB Output is correct
44 Correct 160 ms 40648 KB Output is correct
45 Correct 157 ms 40472 KB Output is correct
46 Correct 155 ms 40216 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 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 1 ms 340 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 336 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 376 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 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 1 ms 340 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 0 ms 336 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 376 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 4 ms 1492 KB Output is correct
29 Correct 4 ms 1492 KB Output is correct
30 Correct 5 ms 1492 KB Output is correct
31 Correct 4 ms 1460 KB Output is correct
32 Correct 4 ms 1492 KB Output is correct
33 Correct 4 ms 1504 KB Output is correct
34 Correct 4 ms 1492 KB Output is correct
35 Correct 5 ms 1820 KB Output is correct
36 Correct 6 ms 1748 KB Output is correct
37 Correct 5 ms 1620 KB Output is correct
38 Correct 4 ms 1492 KB Output is correct
39 Correct 5 ms 1748 KB Output is correct
40 Correct 5 ms 1644 KB Output is correct
41 Correct 5 ms 1620 KB Output is correct
42 Correct 4 ms 1492 KB Output is correct
43 Correct 5 ms 1492 KB Output is correct
44 Correct 4 ms 1492 KB Output is correct
45 Correct 4 ms 1492 KB Output is correct
46 Correct 4 ms 1504 KB Output is correct
47 Correct 4 ms 1492 KB Output is correct
48 Correct 4 ms 1492 KB Output is correct
49 Correct 4 ms 1492 KB Output is correct
50 Correct 4 ms 1492 KB Output is correct
51 Correct 4 ms 1504 KB Output is correct
52 Correct 4 ms 1492 KB Output is correct
53 Correct 4 ms 1492 KB Output is correct
54 Correct 4 ms 1492 KB Output is correct
55 Correct 4 ms 1324 KB Output is correct
56 Correct 4 ms 1252 KB Output is correct
57 Correct 4 ms 1236 KB Output is correct
58 Correct 4 ms 1236 KB Output is correct
59 Correct 4 ms 1236 KB Output is correct
60 Correct 4 ms 1244 KB Output is correct
61 Correct 4 ms 1236 KB Output is correct
62 Correct 4 ms 1244 KB Output is correct
63 Correct 4 ms 1236 KB Output is correct
64 Correct 2 ms 980 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 195 ms 43556 KB Output is correct
5 Correct 196 ms 45008 KB Output is correct
6 Correct 181 ms 44484 KB Output is correct
7 Correct 180 ms 43552 KB Output is correct
8 Correct 197 ms 45484 KB Output is correct
9 Correct 191 ms 44984 KB Output is correct
10 Correct 187 ms 44544 KB Output is correct
11 Correct 190 ms 43576 KB Output is correct
12 Correct 173 ms 41804 KB Output is correct
13 Correct 165 ms 41552 KB Output is correct
14 Correct 161 ms 41296 KB Output is correct
15 Correct 159 ms 40652 KB Output is correct
16 Correct 147 ms 37208 KB Output is correct
17 Correct 140 ms 37024 KB Output is correct
18 Correct 141 ms 36964 KB Output is correct
19 Correct 131 ms 36028 KB Output is correct
20 Correct 130 ms 36044 KB Output is correct
21 Correct 130 ms 35932 KB Output is correct
22 Correct 134 ms 35928 KB Output is correct
23 Correct 132 ms 35880 KB Output is correct
24 Correct 135 ms 35816 KB Output is correct
25 Correct 141 ms 35916 KB Output is correct
26 Correct 148 ms 35980 KB Output is correct
27 Correct 142 ms 35812 KB Output is correct
28 Correct 123 ms 35828 KB Output is correct
29 Correct 121 ms 35900 KB Output is correct
30 Correct 124 ms 35860 KB Output is correct
31 Correct 129 ms 35856 KB Output is correct
32 Correct 129 ms 35876 KB Output is correct
33 Correct 148 ms 36000 KB Output is correct
34 Correct 154 ms 39436 KB Output is correct
35 Correct 142 ms 38308 KB Output is correct
36 Correct 133 ms 37076 KB Output is correct
37 Correct 179 ms 41020 KB Output is correct
38 Correct 177 ms 40896 KB Output is correct
39 Correct 175 ms 40648 KB Output is correct
40 Correct 171 ms 40484 KB Output is correct
41 Correct 173 ms 40232 KB Output is correct
42 Correct 118 ms 35904 KB Output is correct
43 Correct 160 ms 40852 KB Output is correct
44 Correct 160 ms 40648 KB Output is correct
45 Correct 157 ms 40472 KB Output is correct
46 Correct 155 ms 40216 KB Output is correct
47 Correct 1 ms 316 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 0 ms 340 KB Output is correct
50 Correct 0 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 0 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 1 ms 340 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 0 ms 336 KB Output is correct
61 Correct 0 ms 340 KB Output is correct
62 Correct 0 ms 340 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 0 ms 340 KB Output is correct
65 Correct 1 ms 340 KB Output is correct
66 Correct 0 ms 336 KB Output is correct
67 Correct 1 ms 340 KB Output is correct
68 Correct 1 ms 376 KB Output is correct
69 Correct 0 ms 340 KB Output is correct
70 Correct 1 ms 340 KB Output is correct
71 Correct 1 ms 340 KB Output is correct
72 Correct 0 ms 340 KB Output is correct
73 Correct 1 ms 340 KB Output is correct
74 Correct 4 ms 1492 KB Output is correct
75 Correct 4 ms 1492 KB Output is correct
76 Correct 5 ms 1492 KB Output is correct
77 Correct 4 ms 1460 KB Output is correct
78 Correct 4 ms 1492 KB Output is correct
79 Correct 4 ms 1504 KB Output is correct
80 Correct 4 ms 1492 KB Output is correct
81 Correct 5 ms 1820 KB Output is correct
82 Correct 6 ms 1748 KB Output is correct
83 Correct 5 ms 1620 KB Output is correct
84 Correct 4 ms 1492 KB Output is correct
85 Correct 5 ms 1748 KB Output is correct
86 Correct 5 ms 1644 KB Output is correct
87 Correct 5 ms 1620 KB Output is correct
88 Correct 4 ms 1492 KB Output is correct
89 Correct 5 ms 1492 KB Output is correct
90 Correct 4 ms 1492 KB Output is correct
91 Correct 4 ms 1492 KB Output is correct
92 Correct 4 ms 1504 KB Output is correct
93 Correct 4 ms 1492 KB Output is correct
94 Correct 4 ms 1492 KB Output is correct
95 Correct 4 ms 1492 KB Output is correct
96 Correct 4 ms 1492 KB Output is correct
97 Correct 4 ms 1504 KB Output is correct
98 Correct 4 ms 1492 KB Output is correct
99 Correct 4 ms 1492 KB Output is correct
100 Correct 4 ms 1492 KB Output is correct
101 Correct 4 ms 1324 KB Output is correct
102 Correct 4 ms 1252 KB Output is correct
103 Correct 4 ms 1236 KB Output is correct
104 Correct 4 ms 1236 KB Output is correct
105 Correct 4 ms 1236 KB Output is correct
106 Correct 4 ms 1244 KB Output is correct
107 Correct 4 ms 1236 KB Output is correct
108 Correct 4 ms 1244 KB Output is correct
109 Correct 4 ms 1236 KB Output is correct
110 Correct 2 ms 980 KB Output is correct
111 Correct 245 ms 35872 KB Output is correct
112 Correct 262 ms 35900 KB Output is correct
113 Correct 242 ms 35836 KB Output is correct
114 Correct 243 ms 35888 KB Output is correct
115 Correct 234 ms 35920 KB Output is correct
116 Correct 249 ms 35920 KB Output is correct
117 Correct 225 ms 35808 KB Output is correct
118 Correct 315 ms 45572 KB Output is correct
119 Correct 283 ms 44556 KB Output is correct
120 Correct 249 ms 40564 KB Output is correct
121 Correct 183 ms 35880 KB Output is correct
122 Correct 262 ms 41856 KB Output is correct
123 Correct 256 ms 41296 KB Output is correct
124 Correct 250 ms 40684 KB Output is correct
125 Correct 180 ms 35880 KB Output is correct
126 Correct 244 ms 37124 KB Output is correct
127 Correct 238 ms 36988 KB Output is correct
128 Correct 225 ms 36860 KB Output is correct
129 Correct 201 ms 35856 KB Output is correct
130 Correct 237 ms 36052 KB Output is correct
131 Correct 226 ms 35988 KB Output is correct
132 Correct 233 ms 36044 KB Output is correct
133 Correct 221 ms 35932 KB Output is correct
134 Correct 231 ms 35888 KB Output is correct
135 Correct 232 ms 35904 KB Output is correct
136 Correct 237 ms 35808 KB Output is correct
137 Correct 210 ms 35912 KB Output is correct
138 Correct 252 ms 35916 KB Output is correct
139 Correct 234 ms 35932 KB Output is correct
140 Correct 224 ms 35916 KB Output is correct
141 Correct 242 ms 35796 KB Output is correct
142 Correct 174 ms 29892 KB Output is correct
143 Correct 166 ms 29860 KB Output is correct
144 Correct 175 ms 29884 KB Output is correct
145 Correct 159 ms 29924 KB Output is correct
146 Correct 160 ms 29804 KB Output is correct
147 Correct 178 ms 29584 KB Output is correct
148 Correct 145 ms 29292 KB Output is correct
149 Correct 146 ms 29136 KB Output is correct
150 Correct 143 ms 28944 KB Output is correct
151 Correct 139 ms 27892 KB Output is correct
152 Correct 90 ms 19844 KB Output is correct
153 Correct 153 ms 29968 KB Output is correct
154 Correct 151 ms 29712 KB Output is correct
155 Correct 149 ms 29500 KB Output is correct
156 Correct 149 ms 29412 KB Output is correct
157 Correct 143 ms 29128 KB Output is correct
158 Correct 149 ms 28996 KB Output is correct
159 Correct 141 ms 27852 KB Output is correct
160 Correct 92 ms 19600 KB Output is correct
161 Correct 231 ms 32868 KB Output is correct
162 Correct 236 ms 32636 KB Output is correct
163 Correct 221 ms 32456 KB Output is correct
164 Correct 221 ms 32324 KB Output is correct
165 Correct 219 ms 32092 KB Output is correct
166 Correct 130 ms 35788 KB Output is correct
167 Correct 170 ms 40892 KB Output is correct
168 Correct 166 ms 40648 KB Output is correct
169 Correct 166 ms 40548 KB Output is correct
170 Correct 159 ms 40212 KB Output is correct
171 Correct 173 ms 40392 KB Output is correct
172 Correct 174 ms 41052 KB Output is correct
173 Correct 192 ms 24720 KB Output is correct
174 Correct 200 ms 24640 KB Output is correct
175 Correct 193 ms 24584 KB Output is correct
176 Correct 174 ms 23684 KB Output is correct