# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
31324 | 2017-08-18T04:16:34 Z | abcdef6199 | Port Facility (JOI17_port_facility) | C++ | 33 ms | 2044 KB |
#include <bits/stdc++.h> using namespace std; typedef long long LL; typedef pair<int, int> II; const int MAXN = 2000 + 10; const int MOD = (int) 1e9 + 7; int n, a[MAXN], b[MAXN], c[MAXN]; bool ok; void DFS(int u) { for (int v = 1; v <= n; ++v) { bool check1 = a[u] < a[v] && a[v] < b[u] && b[u] < b[v]; bool check2 = a[v] < a[u] && a[u] < b[v] && b[v] < b[u]; if (check1 || check2) { if (c[v] == -1) { c[v] = c[u] ^ 1; DFS(v); } else { if (c[v] == c[u]) ok = false; } } } } int main() { scanf("%d", &n); for (int i = 1; i <= n; ++i) scanf("%d%d", &a[i], &b[i]); int ans = 1; ok = true; for (int i = 1; i <= n; ++i) c[i] = -1; for (int i = 1; i <= n; ++i) if (c[i] == -1) { c[i] = 0; DFS(i); ans = (ans * 2) % MOD; } if (ok == false) puts("0"); else printf("%d\n", ans); return 0; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 2044 KB | Output is correct |
2 | Correct | 0 ms | 2044 KB | Output is correct |
3 | Correct | 0 ms | 2044 KB | Output is correct |
4 | Correct | 0 ms | 2044 KB | Output is correct |
5 | Correct | 0 ms | 2044 KB | Output is correct |
6 | Correct | 0 ms | 2044 KB | Output is correct |
7 | Correct | 0 ms | 2044 KB | Output is correct |
8 | Correct | 0 ms | 2044 KB | Output is correct |
9 | Correct | 0 ms | 2044 KB | Output is correct |
10 | Correct | 0 ms | 2044 KB | Output is correct |
11 | Correct | 0 ms | 2044 KB | Output is correct |
12 | Correct | 0 ms | 2044 KB | Output is correct |
13 | Correct | 0 ms | 2044 KB | Output is correct |
14 | Correct | 0 ms | 2044 KB | Output is correct |
15 | Correct | 0 ms | 2044 KB | Output is correct |
16 | Correct | 0 ms | 2044 KB | Output is correct |
17 | Correct | 0 ms | 2044 KB | Output is correct |
18 | Correct | 0 ms | 2044 KB | Output is correct |
19 | Correct | 0 ms | 2044 KB | Output is correct |
20 | Correct | 0 ms | 2044 KB | Output is correct |
21 | Correct | 0 ms | 2044 KB | Output is correct |
22 | Correct | 0 ms | 2044 KB | Output is correct |
23 | Correct | 0 ms | 2044 KB | Output is correct |
24 | Correct | 0 ms | 2044 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 2044 KB | Output is correct |
2 | Correct | 0 ms | 2044 KB | Output is correct |
3 | Correct | 0 ms | 2044 KB | Output is correct |
4 | Correct | 0 ms | 2044 KB | Output is correct |
5 | Correct | 0 ms | 2044 KB | Output is correct |
6 | Correct | 0 ms | 2044 KB | Output is correct |
7 | Correct | 0 ms | 2044 KB | Output is correct |
8 | Correct | 0 ms | 2044 KB | Output is correct |
9 | Correct | 0 ms | 2044 KB | Output is correct |
10 | Correct | 0 ms | 2044 KB | Output is correct |
11 | Correct | 0 ms | 2044 KB | Output is correct |
12 | Correct | 0 ms | 2044 KB | Output is correct |
13 | Correct | 0 ms | 2044 KB | Output is correct |
14 | Correct | 0 ms | 2044 KB | Output is correct |
15 | Correct | 0 ms | 2044 KB | Output is correct |
16 | Correct | 0 ms | 2044 KB | Output is correct |
17 | Correct | 0 ms | 2044 KB | Output is correct |
18 | Correct | 0 ms | 2044 KB | Output is correct |
19 | Correct | 0 ms | 2044 KB | Output is correct |
20 | Correct | 0 ms | 2044 KB | Output is correct |
21 | Correct | 0 ms | 2044 KB | Output is correct |
22 | Correct | 0 ms | 2044 KB | Output is correct |
23 | Correct | 0 ms | 2044 KB | Output is correct |
24 | Correct | 0 ms | 2044 KB | Output is correct |
25 | Correct | 19 ms | 2044 KB | Output is correct |
26 | Correct | 19 ms | 2044 KB | Output is correct |
27 | Correct | 19 ms | 2044 KB | Output is correct |
28 | Correct | 19 ms | 2044 KB | Output is correct |
29 | Correct | 19 ms | 2044 KB | Output is correct |
30 | Correct | 23 ms | 2044 KB | Output is correct |
31 | Correct | 19 ms | 2044 KB | Output is correct |
32 | Correct | 26 ms | 2044 KB | Output is correct |
33 | Correct | 19 ms | 2044 KB | Output is correct |
34 | Correct | 19 ms | 2044 KB | Output is correct |
35 | Correct | 16 ms | 2044 KB | Output is correct |
36 | Correct | 19 ms | 2044 KB | Output is correct |
37 | Correct | 23 ms | 2044 KB | Output is correct |
38 | Correct | 26 ms | 2044 KB | Output is correct |
39 | Correct | 16 ms | 2044 KB | Output is correct |
40 | Correct | 16 ms | 2044 KB | Output is correct |
41 | Correct | 26 ms | 2044 KB | Output is correct |
42 | Correct | 33 ms | 2044 KB | Output is correct |
43 | Correct | 9 ms | 2044 KB | Output is correct |
44 | Correct | 9 ms | 2044 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 2044 KB | Output is correct |
2 | Correct | 0 ms | 2044 KB | Output is correct |
3 | Correct | 0 ms | 2044 KB | Output is correct |
4 | Correct | 0 ms | 2044 KB | Output is correct |
5 | Correct | 0 ms | 2044 KB | Output is correct |
6 | Correct | 0 ms | 2044 KB | Output is correct |
7 | Correct | 0 ms | 2044 KB | Output is correct |
8 | Correct | 0 ms | 2044 KB | Output is correct |
9 | Correct | 0 ms | 2044 KB | Output is correct |
10 | Correct | 0 ms | 2044 KB | Output is correct |
11 | Correct | 0 ms | 2044 KB | Output is correct |
12 | Correct | 0 ms | 2044 KB | Output is correct |
13 | Correct | 0 ms | 2044 KB | Output is correct |
14 | Correct | 0 ms | 2044 KB | Output is correct |
15 | Correct | 0 ms | 2044 KB | Output is correct |
16 | Correct | 0 ms | 2044 KB | Output is correct |
17 | Correct | 0 ms | 2044 KB | Output is correct |
18 | Correct | 0 ms | 2044 KB | Output is correct |
19 | Correct | 0 ms | 2044 KB | Output is correct |
20 | Correct | 0 ms | 2044 KB | Output is correct |
21 | Correct | 0 ms | 2044 KB | Output is correct |
22 | Correct | 0 ms | 2044 KB | Output is correct |
23 | Correct | 0 ms | 2044 KB | Output is correct |
24 | Correct | 0 ms | 2044 KB | Output is correct |
25 | Correct | 19 ms | 2044 KB | Output is correct |
26 | Correct | 19 ms | 2044 KB | Output is correct |
27 | Correct | 19 ms | 2044 KB | Output is correct |
28 | Correct | 19 ms | 2044 KB | Output is correct |
29 | Correct | 19 ms | 2044 KB | Output is correct |
30 | Correct | 23 ms | 2044 KB | Output is correct |
31 | Correct | 19 ms | 2044 KB | Output is correct |
32 | Correct | 26 ms | 2044 KB | Output is correct |
33 | Correct | 19 ms | 2044 KB | Output is correct |
34 | Correct | 19 ms | 2044 KB | Output is correct |
35 | Correct | 16 ms | 2044 KB | Output is correct |
36 | Correct | 19 ms | 2044 KB | Output is correct |
37 | Correct | 23 ms | 2044 KB | Output is correct |
38 | Correct | 26 ms | 2044 KB | Output is correct |
39 | Correct | 16 ms | 2044 KB | Output is correct |
40 | Correct | 16 ms | 2044 KB | Output is correct |
41 | Correct | 26 ms | 2044 KB | Output is correct |
42 | Correct | 33 ms | 2044 KB | Output is correct |
43 | Correct | 9 ms | 2044 KB | Output is correct |
44 | Correct | 9 ms | 2044 KB | Output is correct |
45 | Runtime error | 3 ms | 2044 KB | Execution killed because of forbidden syscall futex (202) |
46 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 0 ms | 2044 KB | Output is correct |
2 | Correct | 0 ms | 2044 KB | Output is correct |
3 | Correct | 0 ms | 2044 KB | Output is correct |
4 | Correct | 0 ms | 2044 KB | Output is correct |
5 | Correct | 0 ms | 2044 KB | Output is correct |
6 | Correct | 0 ms | 2044 KB | Output is correct |
7 | Correct | 0 ms | 2044 KB | Output is correct |
8 | Correct | 0 ms | 2044 KB | Output is correct |
9 | Correct | 0 ms | 2044 KB | Output is correct |
10 | Correct | 0 ms | 2044 KB | Output is correct |
11 | Correct | 0 ms | 2044 KB | Output is correct |
12 | Correct | 0 ms | 2044 KB | Output is correct |
13 | Correct | 0 ms | 2044 KB | Output is correct |
14 | Correct | 0 ms | 2044 KB | Output is correct |
15 | Correct | 0 ms | 2044 KB | Output is correct |
16 | Correct | 0 ms | 2044 KB | Output is correct |
17 | Correct | 0 ms | 2044 KB | Output is correct |
18 | Correct | 0 ms | 2044 KB | Output is correct |
19 | Correct | 0 ms | 2044 KB | Output is correct |
20 | Correct | 0 ms | 2044 KB | Output is correct |
21 | Correct | 0 ms | 2044 KB | Output is correct |
22 | Correct | 0 ms | 2044 KB | Output is correct |
23 | Correct | 0 ms | 2044 KB | Output is correct |
24 | Correct | 0 ms | 2044 KB | Output is correct |
25 | Correct | 19 ms | 2044 KB | Output is correct |
26 | Correct | 19 ms | 2044 KB | Output is correct |
27 | Correct | 19 ms | 2044 KB | Output is correct |
28 | Correct | 19 ms | 2044 KB | Output is correct |
29 | Correct | 19 ms | 2044 KB | Output is correct |
30 | Correct | 23 ms | 2044 KB | Output is correct |
31 | Correct | 19 ms | 2044 KB | Output is correct |
32 | Correct | 26 ms | 2044 KB | Output is correct |
33 | Correct | 19 ms | 2044 KB | Output is correct |
34 | Correct | 19 ms | 2044 KB | Output is correct |
35 | Correct | 16 ms | 2044 KB | Output is correct |
36 | Correct | 19 ms | 2044 KB | Output is correct |
37 | Correct | 23 ms | 2044 KB | Output is correct |
38 | Correct | 26 ms | 2044 KB | Output is correct |
39 | Correct | 16 ms | 2044 KB | Output is correct |
40 | Correct | 16 ms | 2044 KB | Output is correct |
41 | Correct | 26 ms | 2044 KB | Output is correct |
42 | Correct | 33 ms | 2044 KB | Output is correct |
43 | Correct | 9 ms | 2044 KB | Output is correct |
44 | Correct | 9 ms | 2044 KB | Output is correct |
45 | Runtime error | 3 ms | 2044 KB | Execution killed because of forbidden syscall futex (202) |
46 | Halted | 0 ms | 0 KB | - |