Submission #69351

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
69351	2018-08-20T15:14:59 Z	Just_Solve_The_Problem	Port Facility (JOI17_port_facility)	C++11	100 / 100	2173 ms	624352 KB

port_facility

#include <bits/stdc++.h>

using namespace std;

#define pb push_back
#define eb emplace_back
#define ll long long
#define pii pair < int, int >
#define fr first
#define sc second
#define mk make_pair
#define sz(s) (int)s.size()
#define all(s) s.begin(), s.end()
#define OK puts("ok");
#define whatis(x) cerr << #x << " = " << x << endl;
#define pause system("pause");

const int N = (int)2e6 + 7;
const int inf = (int)1e9 + 7;
int mod = (int)1e9 + 7;

pii ar[N];
int pr[N], used[N];
int ans;
map < int, int > mp;

int mult(int a, int b) {
  return (a * 1LL * b) % mod;
}

int getpar(int a) {
  if (pr[a] == a) return a;
  return pr[a] = getpar(pr[a]);
}

void connect(int a, int b) {
  a = getpar(a);
  b = getpar(b);
  if (a != b) {
    pr[a] = b;
  }
}

main() {
  int n;
  scanf("%d", &n);
  for (int i = 0; i < n; i++) {
    scanf("%d %d", &ar[i].fr, &ar[i].sc);
  }
  iota(pr, pr + n + n + 2, 0);
  sort(ar, ar + n);
  int ans = 1;
  for (int i = 0; i < n; i++) {
    auto fir = mp.lower_bound(ar[i].fr), sec = mp.lower_bound(ar[i].sc);
    while (fir != sec) {
      connect(i, (fir -> sc) + n);
      connect(i + n, fir -> sc);
      if (getpar((--sec) -> sc) == getpar(fir -> sc))
        break;
      fir++;
      sec++;
    }
    mp[ar[i].sc] = i;
  }
  for (int i = 0; i < n; i++) {
    if (getpar(i) == getpar(i + n)) ans = 0;
    else used[getpar(i)] = used[getpar(i + n)] = 1;
  }
  for (int i = 0; i < n; i++) {
    if (used[i]) {
      ans = mult(ans, 2);
    }
  }
  cout << ans;
}

Compilation message

port_facility.cpp:44:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
port_facility.cpp: In function 'int main()':
port_facility.cpp:46:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
port_facility.cpp:48:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &ar[i].fr, &ar[i].sc);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	3 ms	452 KB	Output is correct
3	Correct	3 ms	452 KB	Output is correct
4	Correct	3 ms	452 KB	Output is correct
5	Correct	2 ms	568 KB	Output is correct
6	Correct	3 ms	576 KB	Output is correct
7	Correct	3 ms	696 KB	Output is correct
8	Correct	3 ms	696 KB	Output is correct
9	Correct	2 ms	708 KB	Output is correct
10	Correct	2 ms	712 KB	Output is correct
11	Correct	3 ms	712 KB	Output is correct
12	Correct	2 ms	712 KB	Output is correct
13	Correct	3 ms	724 KB	Output is correct
14	Correct	3 ms	724 KB	Output is correct
15	Correct	3 ms	724 KB	Output is correct
16	Correct	2 ms	724 KB	Output is correct
17	Correct	3 ms	724 KB	Output is correct
18	Correct	2 ms	724 KB	Output is correct
19	Correct	4 ms	724 KB	Output is correct
20	Correct	3 ms	724 KB	Output is correct
21	Correct	4 ms	724 KB	Output is correct
22	Correct	3 ms	724 KB	Output is correct
23	Correct	2 ms	724 KB	Output is correct
24	Correct	2 ms	724 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	3 ms	452 KB	Output is correct
3	Correct	3 ms	452 KB	Output is correct
4	Correct	3 ms	452 KB	Output is correct
5	Correct	2 ms	568 KB	Output is correct
6	Correct	3 ms	576 KB	Output is correct
7	Correct	3 ms	696 KB	Output is correct
8	Correct	3 ms	696 KB	Output is correct
9	Correct	2 ms	708 KB	Output is correct
10	Correct	2 ms	712 KB	Output is correct
11	Correct	3 ms	712 KB	Output is correct
12	Correct	2 ms	712 KB	Output is correct
13	Correct	3 ms	724 KB	Output is correct
14	Correct	3 ms	724 KB	Output is correct
15	Correct	3 ms	724 KB	Output is correct
16	Correct	2 ms	724 KB	Output is correct
17	Correct	3 ms	724 KB	Output is correct
18	Correct	2 ms	724 KB	Output is correct
19	Correct	4 ms	724 KB	Output is correct
20	Correct	3 ms	724 KB	Output is correct
21	Correct	4 ms	724 KB	Output is correct
22	Correct	3 ms	724 KB	Output is correct
23	Correct	2 ms	724 KB	Output is correct
24	Correct	2 ms	724 KB	Output is correct
25	Correct	4 ms	748 KB	Output is correct
26	Correct	5 ms	748 KB	Output is correct
27	Correct	6 ms	748 KB	Output is correct
28	Correct	4 ms	748 KB	Output is correct
29	Correct	5 ms	748 KB	Output is correct
30	Correct	5 ms	748 KB	Output is correct
31	Correct	5 ms	748 KB	Output is correct
32	Correct	5 ms	748 KB	Output is correct
33	Correct	5 ms	876 KB	Output is correct
34	Correct	4 ms	876 KB	Output is correct
35	Correct	4 ms	876 KB	Output is correct
36	Correct	5 ms	876 KB	Output is correct
37	Correct	4 ms	876 KB	Output is correct
38	Correct	5 ms	876 KB	Output is correct
39	Correct	4 ms	876 KB	Output is correct
40	Correct	4 ms	876 KB	Output is correct
41	Correct	5 ms	876 KB	Output is correct
42	Correct	4 ms	876 KB	Output is correct
43	Correct	4 ms	876 KB	Output is correct
44	Correct	4 ms	876 KB	Output is correct

Subtask #3
56.0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	3 ms	452 KB	Output is correct
3	Correct	3 ms	452 KB	Output is correct
4	Correct	3 ms	452 KB	Output is correct
5	Correct	2 ms	568 KB	Output is correct
6	Correct	3 ms	576 KB	Output is correct
7	Correct	3 ms	696 KB	Output is correct
8	Correct	3 ms	696 KB	Output is correct
9	Correct	2 ms	708 KB	Output is correct
10	Correct	2 ms	712 KB	Output is correct
11	Correct	3 ms	712 KB	Output is correct
12	Correct	2 ms	712 KB	Output is correct
13	Correct	3 ms	724 KB	Output is correct
14	Correct	3 ms	724 KB	Output is correct
15	Correct	3 ms	724 KB	Output is correct
16	Correct	2 ms	724 KB	Output is correct
17	Correct	3 ms	724 KB	Output is correct
18	Correct	2 ms	724 KB	Output is correct
19	Correct	4 ms	724 KB	Output is correct
20	Correct	3 ms	724 KB	Output is correct
21	Correct	4 ms	724 KB	Output is correct
22	Correct	3 ms	724 KB	Output is correct
23	Correct	2 ms	724 KB	Output is correct
24	Correct	2 ms	724 KB	Output is correct
25	Correct	4 ms	748 KB	Output is correct
26	Correct	5 ms	748 KB	Output is correct
27	Correct	6 ms	748 KB	Output is correct
28	Correct	4 ms	748 KB	Output is correct
29	Correct	5 ms	748 KB	Output is correct
30	Correct	5 ms	748 KB	Output is correct
31	Correct	5 ms	748 KB	Output is correct
32	Correct	5 ms	748 KB	Output is correct
33	Correct	5 ms	876 KB	Output is correct
34	Correct	4 ms	876 KB	Output is correct
35	Correct	4 ms	876 KB	Output is correct
36	Correct	5 ms	876 KB	Output is correct
37	Correct	4 ms	876 KB	Output is correct
38	Correct	5 ms	876 KB	Output is correct
39	Correct	4 ms	876 KB	Output is correct
40	Correct	4 ms	876 KB	Output is correct
41	Correct	5 ms	876 KB	Output is correct
42	Correct	4 ms	876 KB	Output is correct
43	Correct	4 ms	876 KB	Output is correct
44	Correct	4 ms	876 KB	Output is correct
45	Correct	100 ms	7720 KB	Output is correct
46	Correct	101 ms	8956 KB	Output is correct
47	Correct	95 ms	10236 KB	Output is correct
48	Correct	107 ms	11496 KB	Output is correct
49	Correct	109 ms	12756 KB	Output is correct
50	Correct	91 ms	14028 KB	Output is correct
51	Correct	87 ms	15192 KB	Output is correct
52	Correct	115 ms	16580 KB	Output is correct
53	Correct	101 ms	17784 KB	Output is correct
54	Correct	99 ms	18348 KB	Output is correct
55	Correct	95 ms	19580 KB	Output is correct
56	Correct	105 ms	21012 KB	Output is correct
57	Correct	121 ms	22960 KB	Output is correct
58	Correct	114 ms	24256 KB	Output is correct
59	Correct	96 ms	25484 KB	Output is correct
60	Correct	114 ms	26888 KB	Output is correct
61	Correct	90 ms	28048 KB	Output is correct
62	Correct	93 ms	29308 KB	Output is correct
63	Correct	91 ms	30688 KB	Output is correct
64	Correct	96 ms	31820 KB	Output is correct
65	Correct	125 ms	32316 KB	Output is correct
66	Correct	121 ms	33596 KB	Output is correct
67	Correct	118 ms	35604 KB	Output is correct
68	Correct	112 ms	36884 KB	Output is correct
69	Correct	106 ms	37952 KB	Output is correct
70	Correct	108 ms	39212 KB	Output is correct
71	Correct	148 ms	40600 KB	Output is correct
72	Correct	141 ms	41988 KB	Output is correct
73	Correct	113 ms	42960 KB	Output is correct
74	Correct	129 ms	44236 KB	Output is correct
75	Correct	126 ms	44828 KB	Output is correct
76	Correct	109 ms	46096 KB	Output is correct
77	Correct	124 ms	47364 KB	Output is correct
78	Correct	125 ms	49408 KB	Output is correct
79	Correct	90 ms	50784 KB	Output is correct

Subtask #4
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	3 ms	452 KB	Output is correct
3	Correct	3 ms	452 KB	Output is correct
4	Correct	3 ms	452 KB	Output is correct
5	Correct	2 ms	568 KB	Output is correct
6	Correct	3 ms	576 KB	Output is correct
7	Correct	3 ms	696 KB	Output is correct
8	Correct	3 ms	696 KB	Output is correct
9	Correct	2 ms	708 KB	Output is correct
10	Correct	2 ms	712 KB	Output is correct
11	Correct	3 ms	712 KB	Output is correct
12	Correct	2 ms	712 KB	Output is correct
13	Correct	3 ms	724 KB	Output is correct
14	Correct	3 ms	724 KB	Output is correct
15	Correct	3 ms	724 KB	Output is correct
16	Correct	2 ms	724 KB	Output is correct
17	Correct	3 ms	724 KB	Output is correct
18	Correct	2 ms	724 KB	Output is correct
19	Correct	4 ms	724 KB	Output is correct
20	Correct	3 ms	724 KB	Output is correct
21	Correct	4 ms	724 KB	Output is correct
22	Correct	3 ms	724 KB	Output is correct
23	Correct	2 ms	724 KB	Output is correct
24	Correct	2 ms	724 KB	Output is correct
25	Correct	4 ms	748 KB	Output is correct
26	Correct	5 ms	748 KB	Output is correct
27	Correct	6 ms	748 KB	Output is correct
28	Correct	4 ms	748 KB	Output is correct
29	Correct	5 ms	748 KB	Output is correct
30	Correct	5 ms	748 KB	Output is correct
31	Correct	5 ms	748 KB	Output is correct
32	Correct	5 ms	748 KB	Output is correct
33	Correct	5 ms	876 KB	Output is correct
34	Correct	4 ms	876 KB	Output is correct
35	Correct	4 ms	876 KB	Output is correct
36	Correct	5 ms	876 KB	Output is correct
37	Correct	4 ms	876 KB	Output is correct
38	Correct	5 ms	876 KB	Output is correct
39	Correct	4 ms	876 KB	Output is correct
40	Correct	4 ms	876 KB	Output is correct
41	Correct	5 ms	876 KB	Output is correct
42	Correct	4 ms	876 KB	Output is correct
43	Correct	4 ms	876 KB	Output is correct
44	Correct	4 ms	876 KB	Output is correct
45	Correct	100 ms	7720 KB	Output is correct
46	Correct	101 ms	8956 KB	Output is correct
47	Correct	95 ms	10236 KB	Output is correct
48	Correct	107 ms	11496 KB	Output is correct
49	Correct	109 ms	12756 KB	Output is correct
50	Correct	91 ms	14028 KB	Output is correct
51	Correct	87 ms	15192 KB	Output is correct
52	Correct	115 ms	16580 KB	Output is correct
53	Correct	101 ms	17784 KB	Output is correct
54	Correct	99 ms	18348 KB	Output is correct
55	Correct	95 ms	19580 KB	Output is correct
56	Correct	105 ms	21012 KB	Output is correct
57	Correct	121 ms	22960 KB	Output is correct
58	Correct	114 ms	24256 KB	Output is correct
59	Correct	96 ms	25484 KB	Output is correct
60	Correct	114 ms	26888 KB	Output is correct
61	Correct	90 ms	28048 KB	Output is correct
62	Correct	93 ms	29308 KB	Output is correct
63	Correct	91 ms	30688 KB	Output is correct
64	Correct	96 ms	31820 KB	Output is correct
65	Correct	125 ms	32316 KB	Output is correct
66	Correct	121 ms	33596 KB	Output is correct
67	Correct	118 ms	35604 KB	Output is correct
68	Correct	112 ms	36884 KB	Output is correct
69	Correct	106 ms	37952 KB	Output is correct
70	Correct	108 ms	39212 KB	Output is correct
71	Correct	148 ms	40600 KB	Output is correct
72	Correct	141 ms	41988 KB	Output is correct
73	Correct	113 ms	42960 KB	Output is correct
74	Correct	129 ms	44236 KB	Output is correct
75	Correct	126 ms	44828 KB	Output is correct
76	Correct	109 ms	46096 KB	Output is correct
77	Correct	124 ms	47364 KB	Output is correct
78	Correct	125 ms	49408 KB	Output is correct
79	Correct	90 ms	50784 KB	Output is correct
80	Correct	1028 ms	128904 KB	Output is correct
81	Correct	1148 ms	143632 KB	Output is correct
82	Correct	1110 ms	158092 KB	Output is correct
83	Correct	1142 ms	172596 KB	Output is correct
84	Correct	1027 ms	187364 KB	Output is correct
85	Correct	1032 ms	201708 KB	Output is correct
86	Correct	1036 ms	216384 KB	Output is correct
87	Correct	1385 ms	230964 KB	Output is correct
88	Correct	1347 ms	245444 KB	Output is correct
89	Correct	1356 ms	252272 KB	Output is correct
90	Correct	1311 ms	266804 KB	Output is correct
91	Correct	1372 ms	281440 KB	Output is correct
92	Correct	1377 ms	303828 KB	Output is correct
93	Correct	1438 ms	318400 KB	Output is correct
94	Correct	979 ms	332956 KB	Output is correct
95	Correct	1120 ms	347496 KB	Output is correct
96	Correct	1051 ms	362100 KB	Output is correct
97	Correct	977 ms	376672 KB	Output is correct
98	Correct	1012 ms	391252 KB	Output is correct
99	Correct	1033 ms	405784 KB	Output is correct
100	Correct	2173 ms	412620 KB	Output is correct
101	Correct	2117 ms	427156 KB	Output is correct
102	Correct	1405 ms	449432 KB	Output is correct
103	Correct	1556 ms	464060 KB	Output is correct
104	Correct	1499 ms	475964 KB	Output is correct
105	Correct	1439 ms	490576 KB	Output is correct
106	Correct	1446 ms	508052 KB	Output is correct
107	Correct	1485 ms	522440 KB	Output is correct
108	Correct	1503 ms	534456 KB	Output is correct
109	Correct	1463 ms	549004 KB	Output is correct
110	Correct	1357 ms	558320 KB	Output is correct
111	Correct	1432 ms	572936 KB	Output is correct
112	Correct	1509 ms	587496 KB	Output is correct
113	Correct	1132 ms	609876 KB	Output is correct
114	Correct	1075 ms	624352 KB	Output is correct

Submission #69351

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 12.0 / 12.0

Subtask #3 56.0 / 56.0

Subtask #4 22.0 / 22.0

Subtask #1
10.0 / 10.0

Subtask #2
12.0 / 12.0

Subtask #3
56.0 / 56.0

Subtask #4
22.0 / 22.0