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Submission #967143

# Submission time Handle Problem Language Result Execution time Memory
967143 2024-04-21T10:09:00 Z ttamx Port Facility (JOI17_port_facility) C++17
100 / 100
 898 ms 90572 KB 
#include<bits/stdc++.h>

using namespace std;

const int N=2e6+5;
const int MOD=1e9+7;

int n;
int a[N],p[2*N];
int ans=1;
set<int> s;

int fp(int u){
    return p[u]=u==p[u]?u:fp(p[u]);
}

void uni(int u,int v){
    p[fp(u)]=fp(v);
}

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n;
    for(int i=0;i<n;i++){
        int x;
        cin >> x >> a[x];
    }
    iota(p,p+4*n+1,0);
    for(int i=1;i<=2*n;i++)if(a[i]){
        auto l=s.lower_bound(i),r=s.lower_bound(a[i]);
        for(auto it=l;it!=r;it++){
            uni(a[i],*it+2*n);
            uni(a[i]+2*n,*it);
            if(fp(*it)==fp(*prev(r)))break;
        }
        s.emplace(a[i]);
    }
    for(int i=1;i<=2*n;i++)if(a[i]){
        if(fp(a[i])==fp(a[i]+2*n))cout << 0,exit(0);
        if(fp(a[i])==a[i]){
            ans*=2;
            if(ans>=MOD)ans-=MOD;
        }
    }
    cout << ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 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 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 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 2392 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 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 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 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 2392 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2540 KB Output is correct
29 Correct 1 ms 2648 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2652 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 1 ms 2536 KB Output is correct
36 Correct 1 ms 2640 KB Output is correct
37 Correct 1 ms 2652 KB Output is correct
38 Correct 1 ms 2652 KB Output is correct
39 Correct 1 ms 2652 KB Output is correct
40 Correct 1 ms 2540 KB Output is correct
41 Correct 1 ms 2648 KB Output is correct
42 Correct 1 ms 2652 KB Output is correct
43 Correct 1 ms 2652 KB Output is correct
44 Correct 1 ms 2652 KB Output is correct

Subtask #3
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 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 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 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 2392 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2540 KB Output is correct
29 Correct 1 ms 2648 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2652 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 1 ms 2536 KB Output is correct
36 Correct 1 ms 2640 KB Output is correct
37 Correct 1 ms 2652 KB Output is correct
38 Correct 1 ms 2652 KB Output is correct
39 Correct 1 ms 2652 KB Output is correct
40 Correct 1 ms 2540 KB Output is correct
41 Correct 1 ms 2648 KB Output is correct
42 Correct 1 ms 2652 KB Output is correct
43 Correct 1 ms 2652 KB Output is correct
44 Correct 1 ms 2652 KB Output is correct
45 Correct 43 ms 10492 KB Output is correct
46 Correct 43 ms 10576 KB Output is correct
47 Correct 43 ms 10584 KB Output is correct
48 Correct 44 ms 10580 KB Output is correct
49 Correct 43 ms 10580 KB Output is correct
50 Correct 41 ms 10580 KB Output is correct
51 Correct 40 ms 10576 KB Output is correct
52 Correct 45 ms 10580 KB Output is correct
53 Correct 44 ms 10540 KB Output is correct
54 Correct 39 ms 10540 KB Output is correct
55 Correct 39 ms 10460 KB Output is correct
56 Correct 38 ms 10580 KB Output is correct
57 Correct 41 ms 10668 KB Output is correct
58 Correct 41 ms 10588 KB Output is correct
59 Correct 46 ms 10440 KB Output is correct
60 Correct 41 ms 10580 KB Output is correct
61 Correct 42 ms 10540 KB Output is correct
62 Correct 36 ms 10584 KB Output is correct
63 Correct 38 ms 10584 KB Output is correct
64 Correct 40 ms 10448 KB Output is correct
65 Correct 44 ms 10520 KB Output is correct
66 Correct 45 ms 10544 KB Output is correct
67 Correct 46 ms 11068 KB Output is correct
68 Correct 43 ms 11208 KB Output is correct
69 Correct 43 ms 10940 KB Output is correct
70 Correct 46 ms 10844 KB Output is correct
71 Correct 43 ms 11072 KB Output is correct
72 Correct 43 ms 11104 KB Output is correct
73 Correct 45 ms 11224 KB Output is correct
74 Correct 42 ms 10908 KB Output is correct
75 Correct 58 ms 10440 KB Output is correct
76 Correct 42 ms 10524 KB Output is correct
77 Correct 43 ms 10608 KB Output is correct
78 Correct 41 ms 10580 KB Output is correct
79 Correct 47 ms 10548 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 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 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 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 2392 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2540 KB Output is correct
29 Correct 1 ms 2648 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2652 KB Output is correct
34 Correct 1 ms 2652 KB Output is correct
35 Correct 1 ms 2536 KB Output is correct
36 Correct 1 ms 2640 KB Output is correct
37 Correct 1 ms 2652 KB Output is correct
38 Correct 1 ms 2652 KB Output is correct
39 Correct 1 ms 2652 KB Output is correct
40 Correct 1 ms 2540 KB Output is correct
41 Correct 1 ms 2648 KB Output is correct
42 Correct 1 ms 2652 KB Output is correct
43 Correct 1 ms 2652 KB Output is correct
44 Correct 1 ms 2652 KB Output is correct
45 Correct 43 ms 10492 KB Output is correct
46 Correct 43 ms 10576 KB Output is correct
47 Correct 43 ms 10584 KB Output is correct
48 Correct 44 ms 10580 KB Output is correct
49 Correct 43 ms 10580 KB Output is correct
50 Correct 41 ms 10580 KB Output is correct
51 Correct 40 ms 10576 KB Output is correct
52 Correct 45 ms 10580 KB Output is correct
53 Correct 44 ms 10540 KB Output is correct
54 Correct 39 ms 10540 KB Output is correct
55 Correct 39 ms 10460 KB Output is correct
56 Correct 38 ms 10580 KB Output is correct
57 Correct 41 ms 10668 KB Output is correct
58 Correct 41 ms 10588 KB Output is correct
59 Correct 46 ms 10440 KB Output is correct
60 Correct 41 ms 10580 KB Output is correct
61 Correct 42 ms 10540 KB Output is correct
62 Correct 36 ms 10584 KB Output is correct
63 Correct 38 ms 10584 KB Output is correct
64 Correct 40 ms 10448 KB Output is correct
65 Correct 44 ms 10520 KB Output is correct
66 Correct 45 ms 10544 KB Output is correct
67 Correct 46 ms 11068 KB Output is correct
68 Correct 43 ms 11208 KB Output is correct
69 Correct 43 ms 10940 KB Output is correct
70 Correct 46 ms 10844 KB Output is correct
71 Correct 43 ms 11072 KB Output is correct
72 Correct 43 ms 11104 KB Output is correct
73 Correct 45 ms 11224 KB Output is correct
74 Correct 42 ms 10908 KB Output is correct
75 Correct 58 ms 10440 KB Output is correct
76 Correct 42 ms 10524 KB Output is correct
77 Correct 43 ms 10608 KB Output is correct
78 Correct 41 ms 10580 KB Output is correct
79 Correct 47 ms 10548 KB Output is correct
80 Correct 483 ms 85336 KB Output is correct
81 Correct 515 ms 85580 KB Output is correct
82 Correct 488 ms 85552 KB Output is correct
83 Correct 482 ms 85456 KB Output is correct
84 Correct 479 ms 85388 KB Output is correct
85 Correct 473 ms 85300 KB Output is correct
86 Correct 468 ms 85280 KB Output is correct
87 Correct 594 ms 85440 KB Output is correct
88 Correct 546 ms 82684 KB Output is correct
89 Correct 512 ms 82504 KB Output is correct
90 Correct 592 ms 84556 KB Output is correct
91 Correct 496 ms 84812 KB Output is correct
92 Correct 661 ms 85312 KB Output is correct
93 Correct 626 ms 85388 KB Output is correct
94 Correct 479 ms 85420 KB Output is correct
95 Correct 525 ms 85472 KB Output is correct
96 Correct 493 ms 85448 KB Output is correct
97 Correct 462 ms 85460 KB Output is correct
98 Correct 520 ms 85652 KB Output is correct
99 Correct 447 ms 85428 KB Output is correct
100 Correct 898 ms 84536 KB Output is correct
101 Correct 858 ms 84812 KB Output is correct
102 Correct 608 ms 90568 KB Output is correct
103 Correct 628 ms 90572 KB Output is correct
104 Correct 556 ms 88532 KB Output is correct
105 Correct 551 ms 88704 KB Output is correct
106 Correct 589 ms 88336 KB Output is correct
107 Correct 573 ms 88412 KB Output is correct
108 Correct 549 ms 86344 KB Output is correct
109 Correct 548 ms 86568 KB Output is correct
110 Correct 666 ms 85356 KB Output is correct
111 Correct 606 ms 85408 KB Output is correct
112 Correct 648 ms 85568 KB Output is correct
113 Correct 484 ms 85400 KB Output is correct
114 Correct 500 ms 85328 KB Output is correct