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Submission #471449

# Submission time Handle Problem Language Result Execution time Memory
471449 2021-09-09T11:15:46 Z Rainbowbunny Port Facility (JOI17_port_facility) C++17
100 / 100
 1038 ms 83396 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 1000005;
const int mod = 1e9 + 7;

int n, ans = 1;
int dsu[2 * MAXN];
pair <int, int> A[MAXN];
map <int, int> M;

int Root(int node)
{
    return dsu[node] == node ? node : dsu[node] = Root(dsu[node]);
}

void Union(int x, int y)
{
    x = Root(x);
    y = Root(y);
    if(x == y)
    {
        return;
    }
    dsu[x] = y;
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++)
    {
        cin >> A[i].first >> A[i].second;
        dsu[i] = i;
        dsu[i + n] = i + n;
    }
    sort(A + 1, A + n + 1);
    for(int i = 1; i <= n; i++)
    {
        map <int, int> :: iterator it1 = M.lower_bound(A[i].first);
        map <int, int> :: iterator it2 = M.lower_bound(A[i].second);
        while(it1 != it2)
        {
            Union(i, it1->second + n);
            Union(i + n, it1->second);
            if(Root(i) == Root(i + n))
            {
                cout << 0 << '\n';
                return 0;
            }
            if(Root(it1->second) == Root(it1->second + n))
            {
                cout << 0 << '\n';
                return 0;
            }
            int id = prev(it2)->second;
            if(Root(id) == Root(it1->second))
            {
                break;
            }
            it1++;
        }
        M[A[i].second] = i;
    }
    for(int i = 1; i <= n; i++)
    {
        if(Root(i) == i)
        {
            ans = ans * 2 % mod;
        }
    }
    cout << ans << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 2 ms 460 KB Output is correct
27 Correct 2 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 3 ms 460 KB Output is correct
30 Correct 2 ms 460 KB Output is correct
31 Correct 2 ms 460 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 2 ms 332 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 460 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 460 KB Output is correct
40 Correct 1 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 1 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct

Subtask #3
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 2 ms 460 KB Output is correct
27 Correct 2 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 3 ms 460 KB Output is correct
30 Correct 2 ms 460 KB Output is correct
31 Correct 2 ms 460 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 2 ms 332 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 460 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 460 KB Output is correct
40 Correct 1 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 1 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 69 ms 7820 KB Output is correct
46 Correct 70 ms 7756 KB Output is correct
47 Correct 78 ms 7808 KB Output is correct
48 Correct 79 ms 7820 KB Output is correct
49 Correct 77 ms 7744 KB Output is correct
50 Correct 38 ms 4024 KB Output is correct
51 Correct 47 ms 5156 KB Output is correct
52 Correct 73 ms 7800 KB Output is correct
53 Correct 70 ms 7868 KB Output is correct
54 Correct 33 ms 3148 KB Output is correct
55 Correct 31 ms 3036 KB Output is correct
56 Correct 31 ms 3052 KB Output is correct
57 Correct 84 ms 7908 KB Output is correct
58 Correct 72 ms 7820 KB Output is correct
59 Correct 67 ms 7756 KB Output is correct
60 Correct 70 ms 7764 KB Output is correct
61 Correct 78 ms 7744 KB Output is correct
62 Correct 33 ms 3140 KB Output is correct
63 Correct 32 ms 3032 KB Output is correct
64 Correct 33 ms 3100 KB Output is correct
65 Correct 31 ms 3048 KB Output is correct
66 Correct 34 ms 3136 KB Output is correct
67 Correct 73 ms 8404 KB Output is correct
68 Correct 74 ms 8300 KB Output is correct
69 Correct 73 ms 8128 KB Output is correct
70 Correct 74 ms 8224 KB Output is correct
71 Correct 77 ms 8384 KB Output is correct
72 Correct 89 ms 8300 KB Output is correct
73 Correct 74 ms 8132 KB Output is correct
74 Correct 74 ms 8160 KB Output is correct
75 Correct 73 ms 7720 KB Output is correct
76 Correct 72 ms 7820 KB Output is correct
77 Correct 72 ms 7748 KB Output is correct
78 Correct 73 ms 7776 KB Output is correct
79 Correct 74 ms 7792 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 316 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 2 ms 460 KB Output is correct
26 Correct 2 ms 460 KB Output is correct
27 Correct 2 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 3 ms 460 KB Output is correct
30 Correct 2 ms 460 KB Output is correct
31 Correct 2 ms 460 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 2 ms 332 KB Output is correct
34 Correct 1 ms 328 KB Output is correct
35 Correct 1 ms 460 KB Output is correct
36 Correct 1 ms 460 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 460 KB Output is correct
40 Correct 1 ms 460 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 1 ms 460 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 69 ms 7820 KB Output is correct
46 Correct 70 ms 7756 KB Output is correct
47 Correct 78 ms 7808 KB Output is correct
48 Correct 79 ms 7820 KB Output is correct
49 Correct 77 ms 7744 KB Output is correct
50 Correct 38 ms 4024 KB Output is correct
51 Correct 47 ms 5156 KB Output is correct
52 Correct 73 ms 7800 KB Output is correct
53 Correct 70 ms 7868 KB Output is correct
54 Correct 33 ms 3148 KB Output is correct
55 Correct 31 ms 3036 KB Output is correct
56 Correct 31 ms 3052 KB Output is correct
57 Correct 84 ms 7908 KB Output is correct
58 Correct 72 ms 7820 KB Output is correct
59 Correct 67 ms 7756 KB Output is correct
60 Correct 70 ms 7764 KB Output is correct
61 Correct 78 ms 7744 KB Output is correct
62 Correct 33 ms 3140 KB Output is correct
63 Correct 32 ms 3032 KB Output is correct
64 Correct 33 ms 3100 KB Output is correct
65 Correct 31 ms 3048 KB Output is correct
66 Correct 34 ms 3136 KB Output is correct
67 Correct 73 ms 8404 KB Output is correct
68 Correct 74 ms 8300 KB Output is correct
69 Correct 73 ms 8128 KB Output is correct
70 Correct 74 ms 8224 KB Output is correct
71 Correct 77 ms 8384 KB Output is correct
72 Correct 89 ms 8300 KB Output is correct
73 Correct 74 ms 8132 KB Output is correct
74 Correct 74 ms 8160 KB Output is correct
75 Correct 73 ms 7720 KB Output is correct
76 Correct 72 ms 7820 KB Output is correct
77 Correct 72 ms 7748 KB Output is correct
78 Correct 73 ms 7776 KB Output is correct
79 Correct 74 ms 7792 KB Output is correct
80 Correct 803 ms 77396 KB Output is correct
81 Correct 822 ms 77416 KB Output is correct
82 Correct 765 ms 77336 KB Output is correct
83 Correct 801 ms 77456 KB Output is correct
84 Correct 791 ms 77508 KB Output is correct
85 Correct 497 ms 48368 KB Output is correct
86 Correct 546 ms 54320 KB Output is correct
87 Correct 1038 ms 77332 KB Output is correct
88 Correct 897 ms 77392 KB Output is correct
89 Correct 338 ms 30532 KB Output is correct
90 Correct 336 ms 30404 KB Output is correct
91 Correct 358 ms 30488 KB Output is correct
92 Correct 882 ms 77572 KB Output is correct
93 Correct 857 ms 77596 KB Output is correct
94 Correct 719 ms 77496 KB Output is correct
95 Correct 762 ms 77372 KB Output is correct
96 Correct 771 ms 77596 KB Output is correct
97 Correct 440 ms 43288 KB Output is correct
98 Correct 499 ms 49600 KB Output is correct
99 Correct 386 ms 36804 KB Output is correct
100 Correct 342 ms 30488 KB Output is correct
101 Correct 341 ms 30488 KB Output is correct
102 Correct 878 ms 83340 KB Output is correct
103 Correct 878 ms 83396 KB Output is correct
104 Correct 873 ms 81300 KB Output is correct
105 Correct 891 ms 81476 KB Output is correct
106 Correct 905 ms 83396 KB Output is correct
107 Correct 921 ms 83396 KB Output is correct
108 Correct 938 ms 81360 KB Output is correct
109 Correct 1006 ms 81324 KB Output is correct
110 Correct 887 ms 77340 KB Output is correct
111 Correct 906 ms 77424 KB Output is correct
112 Correct 903 ms 77380 KB Output is correct
113 Correct 815 ms 77380 KB Output is correct
114 Correct 755 ms 77508 KB Output is correct