Submission #77895

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
77895	2018-10-01T06:19:23 Z	win11905	Port Facility (JOI17_port_facility)	C++11	100 / 100	1586 ms	284912 KB

port_facility

#include <bits/stdc++.h>
using namespace std;

#define pii pair<int, int>
#define x first
#define y second

const int N = 1e6+5;
const int M = 1e9+7;

int n, cnt, dsu[N<<1];
vector<pii> V;

int find(int x) { return dsu[x] = dsu[x] == x ? x : find(dsu[x]);}
void mge(int x, int y) { dsu[find(x)] = find(y); }

int main() {
    scanf("%d", &n);
    V.reserve(n);
    iota(dsu, dsu+2*N, 0);
    for(int i = 0, a, b; i < n; ++i) scanf("%d %d", &a, &b), V.emplace_back(a, b);
    sort(V.begin(), V.end());
    map<int, int> pos;
    for(int i = 0; i < n; ++i) {
        auto it = pos.lower_bound(V[i].x), zz = pos.upper_bound(V[i].y);
        bool st = it != zz;
        if(zz != pos.begin()) zz--;
        if(st) for(;; ++it) {
            mge(i, it->y+n), mge(i+n, it->y); 
            if(find(it->y) == find(zz->y)) break;
            if(it == zz) break;
        }
        pos[V[i].y] = i;
    }
    for(int i = 0; i < n; ++i) if(find(i) == find(i+n)) return puts("0"), 0;
    int ans = 1;
    for(int i = 0; i < n; ++i) if(find(i) == i) ans = ans * 2 % M;
    printf("%d\n", ans);
}

Compilation message

port_facility.cpp: In function 'int main()':
port_facility.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
port_facility.cpp:21:60: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i = 0, a, b; i < n; ++i) scanf("%d %d", &a, &b), V.emplace_back(a, b);
                                      ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	8184 KB	Output is correct
2	Correct	8 ms	8316 KB	Output is correct
3	Correct	9 ms	8316 KB	Output is correct
4	Correct	8 ms	8372 KB	Output is correct
5	Correct	8 ms	8372 KB	Output is correct
6	Correct	8 ms	8440 KB	Output is correct
7	Correct	9 ms	8440 KB	Output is correct
8	Correct	8 ms	8440 KB	Output is correct
9	Correct	8 ms	8440 KB	Output is correct
10	Correct	12 ms	8440 KB	Output is correct
11	Correct	9 ms	8440 KB	Output is correct
12	Correct	8 ms	8440 KB	Output is correct
13	Correct	8 ms	8440 KB	Output is correct
14	Correct	9 ms	8440 KB	Output is correct
15	Correct	8 ms	8440 KB	Output is correct
16	Correct	9 ms	8468 KB	Output is correct
17	Correct	8 ms	8468 KB	Output is correct
18	Correct	8 ms	8468 KB	Output is correct
19	Correct	9 ms	8468 KB	Output is correct
20	Correct	8 ms	8468 KB	Output is correct
21	Correct	9 ms	8468 KB	Output is correct
22	Correct	8 ms	8468 KB	Output is correct
23	Correct	8 ms	8468 KB	Output is correct
24	Correct	8 ms	8468 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	8184 KB	Output is correct
2	Correct	8 ms	8316 KB	Output is correct
3	Correct	9 ms	8316 KB	Output is correct
4	Correct	8 ms	8372 KB	Output is correct
5	Correct	8 ms	8372 KB	Output is correct
6	Correct	8 ms	8440 KB	Output is correct
7	Correct	9 ms	8440 KB	Output is correct
8	Correct	8 ms	8440 KB	Output is correct
9	Correct	8 ms	8440 KB	Output is correct
10	Correct	12 ms	8440 KB	Output is correct
11	Correct	9 ms	8440 KB	Output is correct
12	Correct	8 ms	8440 KB	Output is correct
13	Correct	8 ms	8440 KB	Output is correct
14	Correct	9 ms	8440 KB	Output is correct
15	Correct	8 ms	8440 KB	Output is correct
16	Correct	9 ms	8468 KB	Output is correct
17	Correct	8 ms	8468 KB	Output is correct
18	Correct	8 ms	8468 KB	Output is correct
19	Correct	9 ms	8468 KB	Output is correct
20	Correct	8 ms	8468 KB	Output is correct
21	Correct	9 ms	8468 KB	Output is correct
22	Correct	8 ms	8468 KB	Output is correct
23	Correct	8 ms	8468 KB	Output is correct
24	Correct	8 ms	8468 KB	Output is correct
25	Correct	9 ms	8468 KB	Output is correct
26	Correct	10 ms	8532 KB	Output is correct
27	Correct	10 ms	8532 KB	Output is correct
28	Correct	10 ms	8532 KB	Output is correct
29	Correct	9 ms	8532 KB	Output is correct
30	Correct	10 ms	8532 KB	Output is correct
31	Correct	11 ms	8572 KB	Output is correct
32	Correct	9 ms	8572 KB	Output is correct
33	Correct	9 ms	8572 KB	Output is correct
34	Correct	9 ms	8572 KB	Output is correct
35	Correct	9 ms	8572 KB	Output is correct
36	Correct	10 ms	8572 KB	Output is correct
37	Correct	10 ms	8572 KB	Output is correct
38	Correct	11 ms	8572 KB	Output is correct
39	Correct	11 ms	8572 KB	Output is correct
40	Correct	10 ms	8572 KB	Output is correct
41	Correct	11 ms	8572 KB	Output is correct
42	Correct	10 ms	8572 KB	Output is correct
43	Correct	10 ms	8572 KB	Output is correct
44	Correct	9 ms	8572 KB	Output is correct

Subtask #3
56.0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	8184 KB	Output is correct
2	Correct	8 ms	8316 KB	Output is correct
3	Correct	9 ms	8316 KB	Output is correct
4	Correct	8 ms	8372 KB	Output is correct
5	Correct	8 ms	8372 KB	Output is correct
6	Correct	8 ms	8440 KB	Output is correct
7	Correct	9 ms	8440 KB	Output is correct
8	Correct	8 ms	8440 KB	Output is correct
9	Correct	8 ms	8440 KB	Output is correct
10	Correct	12 ms	8440 KB	Output is correct
11	Correct	9 ms	8440 KB	Output is correct
12	Correct	8 ms	8440 KB	Output is correct
13	Correct	8 ms	8440 KB	Output is correct
14	Correct	9 ms	8440 KB	Output is correct
15	Correct	8 ms	8440 KB	Output is correct
16	Correct	9 ms	8468 KB	Output is correct
17	Correct	8 ms	8468 KB	Output is correct
18	Correct	8 ms	8468 KB	Output is correct
19	Correct	9 ms	8468 KB	Output is correct
20	Correct	8 ms	8468 KB	Output is correct
21	Correct	9 ms	8468 KB	Output is correct
22	Correct	8 ms	8468 KB	Output is correct
23	Correct	8 ms	8468 KB	Output is correct
24	Correct	8 ms	8468 KB	Output is correct
25	Correct	9 ms	8468 KB	Output is correct
26	Correct	10 ms	8532 KB	Output is correct
27	Correct	10 ms	8532 KB	Output is correct
28	Correct	10 ms	8532 KB	Output is correct
29	Correct	9 ms	8532 KB	Output is correct
30	Correct	10 ms	8532 KB	Output is correct
31	Correct	11 ms	8572 KB	Output is correct
32	Correct	9 ms	8572 KB	Output is correct
33	Correct	9 ms	8572 KB	Output is correct
34	Correct	9 ms	8572 KB	Output is correct
35	Correct	9 ms	8572 KB	Output is correct
36	Correct	10 ms	8572 KB	Output is correct
37	Correct	10 ms	8572 KB	Output is correct
38	Correct	11 ms	8572 KB	Output is correct
39	Correct	11 ms	8572 KB	Output is correct
40	Correct	10 ms	8572 KB	Output is correct
41	Correct	11 ms	8572 KB	Output is correct
42	Correct	10 ms	8572 KB	Output is correct
43	Correct	10 ms	8572 KB	Output is correct
44	Correct	9 ms	8572 KB	Output is correct
45	Correct	97 ms	13820 KB	Output is correct
46	Correct	104 ms	13820 KB	Output is correct
47	Correct	133 ms	13820 KB	Output is correct
48	Correct	94 ms	13820 KB	Output is correct
49	Correct	95 ms	13948 KB	Output is correct
50	Correct	93 ms	13948 KB	Output is correct
51	Correct	93 ms	13972 KB	Output is correct
52	Correct	117 ms	13972 KB	Output is correct
53	Correct	100 ms	13972 KB	Output is correct
54	Correct	93 ms	13972 KB	Output is correct
55	Correct	89 ms	15100 KB	Output is correct
56	Correct	89 ms	16360 KB	Output is correct
57	Correct	99 ms	17620 KB	Output is correct
58	Correct	92 ms	18880 KB	Output is correct
59	Correct	93 ms	20140 KB	Output is correct
60	Correct	87 ms	21436 KB	Output is correct
61	Correct	87 ms	22804 KB	Output is correct
62	Correct	82 ms	23920 KB	Output is correct
63	Correct	82 ms	25180 KB	Output is correct
64	Correct	93 ms	26440 KB	Output is correct
65	Correct	101 ms	27700 KB	Output is correct
66	Correct	100 ms	28960 KB	Output is correct
67	Correct	106 ms	30988 KB	Output is correct
68	Correct	99 ms	32256 KB	Output is correct
69	Correct	98 ms	33380 KB	Output is correct
70	Correct	105 ms	34512 KB	Output is correct
71	Correct	110 ms	36156 KB	Output is correct
72	Correct	103 ms	37316 KB	Output is correct
73	Correct	121 ms	38332 KB	Output is correct
74	Correct	100 ms	39556 KB	Output is correct
75	Correct	108 ms	40300 KB	Output is correct
76	Correct	109 ms	41560 KB	Output is correct
77	Correct	102 ms	42876 KB	Output is correct
78	Correct	88 ms	44084 KB	Output is correct
79	Correct	92 ms	45340 KB	Output is correct

Subtask #4
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	8184 KB	Output is correct
2	Correct	8 ms	8316 KB	Output is correct
3	Correct	9 ms	8316 KB	Output is correct
4	Correct	8 ms	8372 KB	Output is correct
5	Correct	8 ms	8372 KB	Output is correct
6	Correct	8 ms	8440 KB	Output is correct
7	Correct	9 ms	8440 KB	Output is correct
8	Correct	8 ms	8440 KB	Output is correct
9	Correct	8 ms	8440 KB	Output is correct
10	Correct	12 ms	8440 KB	Output is correct
11	Correct	9 ms	8440 KB	Output is correct
12	Correct	8 ms	8440 KB	Output is correct
13	Correct	8 ms	8440 KB	Output is correct
14	Correct	9 ms	8440 KB	Output is correct
15	Correct	8 ms	8440 KB	Output is correct
16	Correct	9 ms	8468 KB	Output is correct
17	Correct	8 ms	8468 KB	Output is correct
18	Correct	8 ms	8468 KB	Output is correct
19	Correct	9 ms	8468 KB	Output is correct
20	Correct	8 ms	8468 KB	Output is correct
21	Correct	9 ms	8468 KB	Output is correct
22	Correct	8 ms	8468 KB	Output is correct
23	Correct	8 ms	8468 KB	Output is correct
24	Correct	8 ms	8468 KB	Output is correct
25	Correct	9 ms	8468 KB	Output is correct
26	Correct	10 ms	8532 KB	Output is correct
27	Correct	10 ms	8532 KB	Output is correct
28	Correct	10 ms	8532 KB	Output is correct
29	Correct	9 ms	8532 KB	Output is correct
30	Correct	10 ms	8532 KB	Output is correct
31	Correct	11 ms	8572 KB	Output is correct
32	Correct	9 ms	8572 KB	Output is correct
33	Correct	9 ms	8572 KB	Output is correct
34	Correct	9 ms	8572 KB	Output is correct
35	Correct	9 ms	8572 KB	Output is correct
36	Correct	10 ms	8572 KB	Output is correct
37	Correct	10 ms	8572 KB	Output is correct
38	Correct	11 ms	8572 KB	Output is correct
39	Correct	11 ms	8572 KB	Output is correct
40	Correct	10 ms	8572 KB	Output is correct
41	Correct	11 ms	8572 KB	Output is correct
42	Correct	10 ms	8572 KB	Output is correct
43	Correct	10 ms	8572 KB	Output is correct
44	Correct	9 ms	8572 KB	Output is correct
45	Correct	97 ms	13820 KB	Output is correct
46	Correct	104 ms	13820 KB	Output is correct
47	Correct	133 ms	13820 KB	Output is correct
48	Correct	94 ms	13820 KB	Output is correct
49	Correct	95 ms	13948 KB	Output is correct
50	Correct	93 ms	13948 KB	Output is correct
51	Correct	93 ms	13972 KB	Output is correct
52	Correct	117 ms	13972 KB	Output is correct
53	Correct	100 ms	13972 KB	Output is correct
54	Correct	93 ms	13972 KB	Output is correct
55	Correct	89 ms	15100 KB	Output is correct
56	Correct	89 ms	16360 KB	Output is correct
57	Correct	99 ms	17620 KB	Output is correct
58	Correct	92 ms	18880 KB	Output is correct
59	Correct	93 ms	20140 KB	Output is correct
60	Correct	87 ms	21436 KB	Output is correct
61	Correct	87 ms	22804 KB	Output is correct
62	Correct	82 ms	23920 KB	Output is correct
63	Correct	82 ms	25180 KB	Output is correct
64	Correct	93 ms	26440 KB	Output is correct
65	Correct	101 ms	27700 KB	Output is correct
66	Correct	100 ms	28960 KB	Output is correct
67	Correct	106 ms	30988 KB	Output is correct
68	Correct	99 ms	32256 KB	Output is correct
69	Correct	98 ms	33380 KB	Output is correct
70	Correct	105 ms	34512 KB	Output is correct
71	Correct	110 ms	36156 KB	Output is correct
72	Correct	103 ms	37316 KB	Output is correct
73	Correct	121 ms	38332 KB	Output is correct
74	Correct	100 ms	39556 KB	Output is correct
75	Correct	108 ms	40300 KB	Output is correct
76	Correct	109 ms	41560 KB	Output is correct
77	Correct	102 ms	42876 KB	Output is correct
78	Correct	88 ms	44084 KB	Output is correct
79	Correct	92 ms	45340 KB	Output is correct
80	Correct	911 ms	109392 KB	Output is correct
81	Correct	927 ms	123868 KB	Output is correct
82	Correct	944 ms	138272 KB	Output is correct
83	Correct	974 ms	153196 KB	Output is correct
84	Correct	957 ms	167500 KB	Output is correct
85	Correct	912 ms	182020 KB	Output is correct
86	Correct	919 ms	196560 KB	Output is correct
87	Correct	1244 ms	211100 KB	Output is correct
88	Correct	1266 ms	225768 KB	Output is correct
89	Correct	1087 ms	240332 KB	Output is correct
90	Correct	1072 ms	254724 KB	Output is correct
91	Correct	1090 ms	269260 KB	Output is correct
92	Correct	1225 ms	277016 KB	Output is correct
93	Correct	1234 ms	277036 KB	Output is correct
94	Correct	907 ms	277036 KB	Output is correct
95	Correct	932 ms	277064 KB	Output is correct
96	Correct	911 ms	277064 KB	Output is correct
97	Correct	851 ms	277064 KB	Output is correct
98	Correct	932 ms	277064 KB	Output is correct
99	Correct	886 ms	277064 KB	Output is correct
100	Correct	1501 ms	277104 KB	Output is correct
101	Correct	1586 ms	277104 KB	Output is correct
102	Correct	1260 ms	284912 KB	Output is correct
103	Correct	1285 ms	284912 KB	Output is correct
104	Correct	1265 ms	284912 KB	Output is correct
105	Correct	1256 ms	284912 KB	Output is correct
106	Correct	1306 ms	284912 KB	Output is correct
107	Correct	1303 ms	284912 KB	Output is correct
108	Correct	1353 ms	284912 KB	Output is correct
109	Correct	1369 ms	284912 KB	Output is correct
110	Correct	1300 ms	284912 KB	Output is correct
111	Correct	1316 ms	284912 KB	Output is correct
112	Correct	1248 ms	284912 KB	Output is correct
113	Correct	956 ms	284912 KB	Output is correct
114	Correct	956 ms	284912 KB	Output is correct

Submission #77895

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