oj.uz

Submission #620081

# Submission time Handle Problem Language Result Execution time Memory
620081 2022-08-02T21:58:49 Z chonka Port Facility (JOI17_port_facility) C++17
100 / 100
 961 ms 85412 KB 
#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
typedef unsigned long long ull ;
#define fi first
#define se second
// mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

const int MAXN = 2e6 + 7 ;
const int MOD = 1e9 + 7 ;

int n ;
pair < int , int > a[ MAXN ] ;
int prv[ MAXN ] , rnk[ MAXN ] ;

int get ( int x ) {
    if ( prv[ x ] == -1 ) { return x ; }
    int y = get ( prv[ x ] ) ;
    prv[ x ] = y ;
    return y ;
}

void unite ( int x , int y ) {
    int k1 = get ( x ) , k2 = get ( y ) ;
    if ( k1 != k2 ) {
        if ( rnk[ k1 ] >= rnk[ k2 ] ) {
            rnk[ k1 ] += ( rnk[ k1 ] == rnk[ k2 ] ) ;
            prv[ k2 ] = k1 ;
        }
        else {
            prv[ k1 ] = k2 ;
        }
    }
}

void solve ( ) {
    cin >> n ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        cin >> a[ i ].fi >> a[ i ].se ;
    }
    sort ( a + 1 , a + n + 1 ) ;
    for ( int i = 1 ; i <= 2 * n ; ++ i ) {
        prv[ i ] = -1 , rnk[ i ] = 0 ;
    }
    set < pair < int , int > > s ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        auto it = s.lower_bound ( { a[ i ].fi , 0 } ) ;
        auto en = s.lower_bound ( { a[ i ].se , 0 } ) ;
        auto aux = en ; -- aux ;
        while ( it != en ) {
            unite ( i , it->se + n ) ;
            unite ( i + n , it->se ) ;

            if ( get ( it->se ) == get ( aux->se ) ) { break ; }
            ++ it ;
        }
        if ( get ( i ) == get ( n + i ) ) {
            cout << "0\n" ;
            return ;
        }
        s.insert ( { a[ i ].se , i } ) ;
    }
    ll ans = 1 ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        if ( get ( i ) == i ) {
            ans = ( ans * 2 ) % MOD ;
        }
    }
    cout << ans << "\n" ;
}

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

Subtask #1
10.0 / 10.0

# 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 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 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 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 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 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct

Subtask #2
12.0 / 12.0

# 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 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 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 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 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 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 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 1 ms 468 KB Output is correct
26 Correct 2 ms 476 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 496 KB Output is correct
31 Correct 2 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 472 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 492 KB Output is correct
40 Correct 1 ms 468 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 1 ms 500 KB Output is correct

Subtask #3
56.0 / 56.0

# 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 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 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 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 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 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 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 1 ms 468 KB Output is correct
26 Correct 2 ms 476 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 496 KB Output is correct
31 Correct 2 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 472 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 492 KB Output is correct
40 Correct 1 ms 468 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 1 ms 500 KB Output is correct
45 Correct 59 ms 8700 KB Output is correct
46 Correct 56 ms 8636 KB Output is correct
47 Correct 57 ms 8628 KB Output is correct
48 Correct 58 ms 8632 KB Output is correct
49 Correct 55 ms 8580 KB Output is correct
50 Correct 30 ms 4812 KB Output is correct
51 Correct 36 ms 5816 KB Output is correct
52 Correct 61 ms 8524 KB Output is correct
53 Correct 67 ms 8600 KB Output is correct
54 Correct 23 ms 3844 KB Output is correct
55 Correct 24 ms 3828 KB Output is correct
56 Correct 24 ms 3884 KB Output is correct
57 Correct 59 ms 8624 KB Output is correct
58 Correct 57 ms 8508 KB Output is correct
59 Correct 55 ms 8656 KB Output is correct
60 Correct 53 ms 8524 KB Output is correct
61 Correct 55 ms 8632 KB Output is correct
62 Correct 25 ms 3924 KB Output is correct
63 Correct 24 ms 3900 KB Output is correct
64 Correct 23 ms 3964 KB Output is correct
65 Correct 23 ms 3820 KB Output is correct
66 Correct 24 ms 3928 KB Output is correct
67 Correct 62 ms 8560 KB Output is correct
68 Correct 70 ms 8628 KB Output is correct
69 Correct 60 ms 8524 KB Output is correct
70 Correct 59 ms 8524 KB Output is correct
71 Correct 66 ms 8552 KB Output is correct
72 Correct 65 ms 8572 KB Output is correct
73 Correct 63 ms 8564 KB Output is correct
74 Correct 69 ms 8652 KB Output is correct
75 Correct 58 ms 8560 KB Output is correct
76 Correct 62 ms 8532 KB Output is correct
77 Correct 61 ms 8580 KB Output is correct
78 Correct 56 ms 8636 KB Output is correct
79 Correct 54 ms 8524 KB Output is correct

Subtask #4
22.0 / 22.0

# 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 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 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 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 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 1 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 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 1 ms 468 KB Output is correct
26 Correct 2 ms 476 KB Output is correct
27 Correct 2 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 496 KB Output is correct
31 Correct 2 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 472 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 492 KB Output is correct
40 Correct 1 ms 468 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 1 ms 500 KB Output is correct
45 Correct 59 ms 8700 KB Output is correct
46 Correct 56 ms 8636 KB Output is correct
47 Correct 57 ms 8628 KB Output is correct
48 Correct 58 ms 8632 KB Output is correct
49 Correct 55 ms 8580 KB Output is correct
50 Correct 30 ms 4812 KB Output is correct
51 Correct 36 ms 5816 KB Output is correct
52 Correct 61 ms 8524 KB Output is correct
53 Correct 67 ms 8600 KB Output is correct
54 Correct 23 ms 3844 KB Output is correct
55 Correct 24 ms 3828 KB Output is correct
56 Correct 24 ms 3884 KB Output is correct
57 Correct 59 ms 8624 KB Output is correct
58 Correct 57 ms 8508 KB Output is correct
59 Correct 55 ms 8656 KB Output is correct
60 Correct 53 ms 8524 KB Output is correct
61 Correct 55 ms 8632 KB Output is correct
62 Correct 25 ms 3924 KB Output is correct
63 Correct 24 ms 3900 KB Output is correct
64 Correct 23 ms 3964 KB Output is correct
65 Correct 23 ms 3820 KB Output is correct
66 Correct 24 ms 3928 KB Output is correct
67 Correct 62 ms 8560 KB Output is correct
68 Correct 70 ms 8628 KB Output is correct
69 Correct 60 ms 8524 KB Output is correct
70 Correct 59 ms 8524 KB Output is correct
71 Correct 66 ms 8552 KB Output is correct
72 Correct 65 ms 8572 KB Output is correct
73 Correct 63 ms 8564 KB Output is correct
74 Correct 69 ms 8652 KB Output is correct
75 Correct 58 ms 8560 KB Output is correct
76 Correct 62 ms 8532 KB Output is correct
77 Correct 61 ms 8580 KB Output is correct
78 Correct 56 ms 8636 KB Output is correct
79 Correct 54 ms 8524 KB Output is correct
80 Correct 603 ms 85216 KB Output is correct
81 Correct 602 ms 85304 KB Output is correct
82 Correct 597 ms 85360 KB Output is correct
83 Correct 622 ms 85260 KB Output is correct
84 Correct 614 ms 85196 KB Output is correct
85 Correct 388 ms 56180 KB Output is correct
86 Correct 419 ms 62184 KB Output is correct
87 Correct 689 ms 85320 KB Output is correct
88 Correct 822 ms 85252 KB Output is correct
89 Correct 255 ms 38304 KB Output is correct
90 Correct 251 ms 38332 KB Output is correct
91 Correct 249 ms 38224 KB Output is correct
92 Correct 790 ms 85280 KB Output is correct
93 Correct 789 ms 85296 KB Output is correct
94 Correct 584 ms 85252 KB Output is correct
95 Correct 601 ms 85344 KB Output is correct
96 Correct 590 ms 85192 KB Output is correct
97 Correct 380 ms 51108 KB Output is correct
98 Correct 411 ms 57444 KB Output is correct
99 Correct 292 ms 44676 KB Output is correct
100 Correct 250 ms 38336 KB Output is correct
101 Correct 263 ms 38288 KB Output is correct
102 Correct 918 ms 85212 KB Output is correct
103 Correct 801 ms 85284 KB Output is correct
104 Correct 796 ms 85308 KB Output is correct
105 Correct 846 ms 85384 KB Output is correct
106 Correct 942 ms 85316 KB Output is correct
107 Correct 961 ms 85224 KB Output is correct
108 Correct 880 ms 85304 KB Output is correct
109 Correct 816 ms 85320 KB Output is correct
110 Correct 733 ms 85248 KB Output is correct
111 Correct 781 ms 85412 KB Output is correct
112 Correct 813 ms 85288 KB Output is correct
113 Correct 611 ms 85196 KB Output is correct
114 Correct 611 ms 85384 KB Output is correct