Submission #27819

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
27819	2017-07-14T07:10:35 Z	tlwpdus	Port Facility (JOI17_port_facility)	C++11	100 / 100	1443 ms	103448 KB

port_facility

// N^2

#include <bits/stdc++.h>
#define x first
#define y second

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;

map<int,int> ma;
vector<int> lis[1000100];

int n;
ll MOD = 1000000007, res = 1;
pii arr[1000100];
int par[2000100], chk[2000100];

int fin(int a) {return par[a] = ((par[a]==a)?a:fin(par[a]));}
void uni(int a, int b) {par[fin(a)]=fin(b);}

void good(int a, int b) {uni(a,b);uni(a+n,b+n);}
void bad(int a, int b) {uni(a,b+n);uni(a+n,b);}

int main() {
    int i;

    scanf("%d",&n);
    for (i=0;i<n;i++) {
		scanf("%d%d",&arr[i].x,&arr[i].y);
    }
    for (i=0;i<2*n;i++) par[i] = i;
    sort(arr,arr+n);
    for (i=0;i<n;i++) {
		auto it = ma.lower_bound(arr[i].x), ed = ma.lower_bound(arr[i].y);
		while(it!=ed) {
			auto pit = --ed; ++ed;
			bad(i,it->second);
			if (fin(it->second)==fin(pit->second)) break;
			it++;
		}
		if (fin(i)==fin(i+n)) {
			printf("0\n");
			return 0;
		}
		ma[arr[i].y] = i;
    }
    for (i=0;i<n;i++) {
		if (fin(i)==fin(i+n)) res = 0;
		else chk[fin(i)] = chk[fin(i+n)] = 1;
    }
    for (i=0;i<n;i++) if (chk[i]) res = res*2%MOD;
    printf("%lld\n",res);

    return 0;
}

Compilation message

port_facility.cpp: In function 'int main()':
port_facility.cpp:29:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
port_facility.cpp:31:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&arr[i].x,&arr[i].y);
                                    ^

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	48900 KB	Output is correct
2	Correct	6 ms	48900 KB	Output is correct
3	Correct	13 ms	48900 KB	Output is correct
4	Correct	6 ms	48900 KB	Output is correct
5	Correct	0 ms	48900 KB	Output is correct
6	Correct	3 ms	48900 KB	Output is correct
7	Correct	3 ms	48900 KB	Output is correct
8	Correct	6 ms	48900 KB	Output is correct
9	Correct	0 ms	48900 KB	Output is correct
10	Correct	3 ms	48900 KB	Output is correct
11	Correct	9 ms	48900 KB	Output is correct
12	Correct	6 ms	48900 KB	Output is correct
13	Correct	9 ms	48900 KB	Output is correct
14	Correct	6 ms	48900 KB	Output is correct
15	Correct	3 ms	48900 KB	Output is correct
16	Correct	6 ms	48900 KB	Output is correct
17	Correct	0 ms	48900 KB	Output is correct
18	Correct	9 ms	48900 KB	Output is correct
19	Correct	3 ms	48900 KB	Output is correct
20	Correct	6 ms	48900 KB	Output is correct
21	Correct	0 ms	48900 KB	Output is correct
22	Correct	0 ms	48900 KB	Output is correct
23	Correct	6 ms	48900 KB	Output is correct
24	Correct	13 ms	48900 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	48900 KB	Output is correct
2	Correct	6 ms	48900 KB	Output is correct
3	Correct	13 ms	48900 KB	Output is correct
4	Correct	6 ms	48900 KB	Output is correct
5	Correct	0 ms	48900 KB	Output is correct
6	Correct	3 ms	48900 KB	Output is correct
7	Correct	3 ms	48900 KB	Output is correct
8	Correct	6 ms	48900 KB	Output is correct
9	Correct	0 ms	48900 KB	Output is correct
10	Correct	3 ms	48900 KB	Output is correct
11	Correct	9 ms	48900 KB	Output is correct
12	Correct	6 ms	48900 KB	Output is correct
13	Correct	9 ms	48900 KB	Output is correct
14	Correct	6 ms	48900 KB	Output is correct
15	Correct	3 ms	48900 KB	Output is correct
16	Correct	6 ms	48900 KB	Output is correct
17	Correct	0 ms	48900 KB	Output is correct
18	Correct	9 ms	48900 KB	Output is correct
19	Correct	3 ms	48900 KB	Output is correct
20	Correct	6 ms	48900 KB	Output is correct
21	Correct	0 ms	48900 KB	Output is correct
22	Correct	0 ms	48900 KB	Output is correct
23	Correct	6 ms	48900 KB	Output is correct
24	Correct	13 ms	48900 KB	Output is correct
25	Correct	3 ms	49032 KB	Output is correct
26	Correct	3 ms	49032 KB	Output is correct
27	Correct	6 ms	49032 KB	Output is correct
28	Correct	3 ms	49032 KB	Output is correct
29	Correct	6 ms	49032 KB	Output is correct
30	Correct	6 ms	49032 KB	Output is correct
31	Correct	3 ms	49032 KB	Output is correct
32	Correct	3 ms	49032 KB	Output is correct
33	Correct	3 ms	49032 KB	Output is correct
34	Correct	6 ms	48900 KB	Output is correct
35	Correct	6 ms	49032 KB	Output is correct
36	Correct	3 ms	49032 KB	Output is correct
37	Correct	6 ms	48900 KB	Output is correct
38	Correct	3 ms	48900 KB	Output is correct
39	Correct	13 ms	49032 KB	Output is correct
40	Correct	6 ms	49032 KB	Output is correct
41	Correct	6 ms	49032 KB	Output is correct
42	Correct	6 ms	49032 KB	Output is correct
43	Correct	9 ms	49032 KB	Output is correct
44	Correct	6 ms	49032 KB	Output is correct

Subtask #3
56.0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	48900 KB	Output is correct
2	Correct	6 ms	48900 KB	Output is correct
3	Correct	13 ms	48900 KB	Output is correct
4	Correct	6 ms	48900 KB	Output is correct
5	Correct	0 ms	48900 KB	Output is correct
6	Correct	3 ms	48900 KB	Output is correct
7	Correct	3 ms	48900 KB	Output is correct
8	Correct	6 ms	48900 KB	Output is correct
9	Correct	0 ms	48900 KB	Output is correct
10	Correct	3 ms	48900 KB	Output is correct
11	Correct	9 ms	48900 KB	Output is correct
12	Correct	6 ms	48900 KB	Output is correct
13	Correct	9 ms	48900 KB	Output is correct
14	Correct	6 ms	48900 KB	Output is correct
15	Correct	3 ms	48900 KB	Output is correct
16	Correct	6 ms	48900 KB	Output is correct
17	Correct	0 ms	48900 KB	Output is correct
18	Correct	9 ms	48900 KB	Output is correct
19	Correct	3 ms	48900 KB	Output is correct
20	Correct	6 ms	48900 KB	Output is correct
21	Correct	0 ms	48900 KB	Output is correct
22	Correct	0 ms	48900 KB	Output is correct
23	Correct	6 ms	48900 KB	Output is correct
24	Correct	13 ms	48900 KB	Output is correct
25	Correct	3 ms	49032 KB	Output is correct
26	Correct	3 ms	49032 KB	Output is correct
27	Correct	6 ms	49032 KB	Output is correct
28	Correct	3 ms	49032 KB	Output is correct
29	Correct	6 ms	49032 KB	Output is correct
30	Correct	6 ms	49032 KB	Output is correct
31	Correct	3 ms	49032 KB	Output is correct
32	Correct	3 ms	49032 KB	Output is correct
33	Correct	3 ms	49032 KB	Output is correct
34	Correct	6 ms	48900 KB	Output is correct
35	Correct	6 ms	49032 KB	Output is correct
36	Correct	3 ms	49032 KB	Output is correct
37	Correct	6 ms	48900 KB	Output is correct
38	Correct	3 ms	48900 KB	Output is correct
39	Correct	13 ms	49032 KB	Output is correct
40	Correct	6 ms	49032 KB	Output is correct
41	Correct	6 ms	49032 KB	Output is correct
42	Correct	6 ms	49032 KB	Output is correct
43	Correct	9 ms	49032 KB	Output is correct
44	Correct	6 ms	49032 KB	Output is correct
45	Correct	96 ms	53652 KB	Output is correct
46	Correct	96 ms	53652 KB	Output is correct
47	Correct	106 ms	53652 KB	Output is correct
48	Correct	109 ms	53652 KB	Output is correct
49	Correct	96 ms	53652 KB	Output is correct
50	Correct	46 ms	49956 KB	Output is correct
51	Correct	89 ms	50880 KB	Output is correct
52	Correct	99 ms	53652 KB	Output is correct
53	Correct	96 ms	53652 KB	Output is correct
54	Correct	39 ms	48900 KB	Output is correct
55	Correct	43 ms	48900 KB	Output is correct
56	Correct	43 ms	48900 KB	Output is correct
57	Correct	106 ms	53652 KB	Output is correct
58	Correct	103 ms	53652 KB	Output is correct
59	Correct	83 ms	53652 KB	Output is correct
60	Correct	93 ms	53652 KB	Output is correct
61	Correct	96 ms	53652 KB	Output is correct
62	Correct	43 ms	49032 KB	Output is correct
63	Correct	39 ms	48900 KB	Output is correct
64	Correct	46 ms	48900 KB	Output is correct
65	Correct	39 ms	48900 KB	Output is correct
66	Correct	36 ms	48900 KB	Output is correct
67	Correct	93 ms	54312 KB	Output is correct
68	Correct	96 ms	54304 KB	Output is correct
69	Correct	96 ms	54048 KB	Output is correct
70	Correct	99 ms	54048 KB	Output is correct
71	Correct	96 ms	54308 KB	Output is correct
72	Correct	103 ms	54312 KB	Output is correct
73	Correct	99 ms	54052 KB	Output is correct
74	Correct	96 ms	54052 KB	Output is correct
75	Correct	96 ms	53652 KB	Output is correct
76	Correct	106 ms	53652 KB	Output is correct
77	Correct	93 ms	53652 KB	Output is correct
78	Correct	116 ms	53652 KB	Output is correct
79	Correct	86 ms	53652 KB	Output is correct

Subtask #4
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	48900 KB	Output is correct
2	Correct	6 ms	48900 KB	Output is correct
3	Correct	13 ms	48900 KB	Output is correct
4	Correct	6 ms	48900 KB	Output is correct
5	Correct	0 ms	48900 KB	Output is correct
6	Correct	3 ms	48900 KB	Output is correct
7	Correct	3 ms	48900 KB	Output is correct
8	Correct	6 ms	48900 KB	Output is correct
9	Correct	0 ms	48900 KB	Output is correct
10	Correct	3 ms	48900 KB	Output is correct
11	Correct	9 ms	48900 KB	Output is correct
12	Correct	6 ms	48900 KB	Output is correct
13	Correct	9 ms	48900 KB	Output is correct
14	Correct	6 ms	48900 KB	Output is correct
15	Correct	3 ms	48900 KB	Output is correct
16	Correct	6 ms	48900 KB	Output is correct
17	Correct	0 ms	48900 KB	Output is correct
18	Correct	9 ms	48900 KB	Output is correct
19	Correct	3 ms	48900 KB	Output is correct
20	Correct	6 ms	48900 KB	Output is correct
21	Correct	0 ms	48900 KB	Output is correct
22	Correct	0 ms	48900 KB	Output is correct
23	Correct	6 ms	48900 KB	Output is correct
24	Correct	13 ms	48900 KB	Output is correct
25	Correct	3 ms	49032 KB	Output is correct
26	Correct	3 ms	49032 KB	Output is correct
27	Correct	6 ms	49032 KB	Output is correct
28	Correct	3 ms	49032 KB	Output is correct
29	Correct	6 ms	49032 KB	Output is correct
30	Correct	6 ms	49032 KB	Output is correct
31	Correct	3 ms	49032 KB	Output is correct
32	Correct	3 ms	49032 KB	Output is correct
33	Correct	3 ms	49032 KB	Output is correct
34	Correct	6 ms	48900 KB	Output is correct
35	Correct	6 ms	49032 KB	Output is correct
36	Correct	3 ms	49032 KB	Output is correct
37	Correct	6 ms	48900 KB	Output is correct
38	Correct	3 ms	48900 KB	Output is correct
39	Correct	13 ms	49032 KB	Output is correct
40	Correct	6 ms	49032 KB	Output is correct
41	Correct	6 ms	49032 KB	Output is correct
42	Correct	6 ms	49032 KB	Output is correct
43	Correct	9 ms	49032 KB	Output is correct
44	Correct	6 ms	49032 KB	Output is correct
45	Correct	96 ms	53652 KB	Output is correct
46	Correct	96 ms	53652 KB	Output is correct
47	Correct	106 ms	53652 KB	Output is correct
48	Correct	109 ms	53652 KB	Output is correct
49	Correct	96 ms	53652 KB	Output is correct
50	Correct	46 ms	49956 KB	Output is correct
51	Correct	89 ms	50880 KB	Output is correct
52	Correct	99 ms	53652 KB	Output is correct
53	Correct	96 ms	53652 KB	Output is correct
54	Correct	39 ms	48900 KB	Output is correct
55	Correct	43 ms	48900 KB	Output is correct
56	Correct	43 ms	48900 KB	Output is correct
57	Correct	106 ms	53652 KB	Output is correct
58	Correct	103 ms	53652 KB	Output is correct
59	Correct	83 ms	53652 KB	Output is correct
60	Correct	93 ms	53652 KB	Output is correct
61	Correct	96 ms	53652 KB	Output is correct
62	Correct	43 ms	49032 KB	Output is correct
63	Correct	39 ms	48900 KB	Output is correct
64	Correct	46 ms	48900 KB	Output is correct
65	Correct	39 ms	48900 KB	Output is correct
66	Correct	36 ms	48900 KB	Output is correct
67	Correct	93 ms	54312 KB	Output is correct
68	Correct	96 ms	54304 KB	Output is correct
69	Correct	96 ms	54048 KB	Output is correct
70	Correct	99 ms	54048 KB	Output is correct
71	Correct	96 ms	54308 KB	Output is correct
72	Correct	103 ms	54312 KB	Output is correct
73	Correct	99 ms	54052 KB	Output is correct
74	Correct	96 ms	54052 KB	Output is correct
75	Correct	96 ms	53652 KB	Output is correct
76	Correct	106 ms	53652 KB	Output is correct
77	Correct	93 ms	53652 KB	Output is correct
78	Correct	116 ms	53652 KB	Output is correct
79	Correct	86 ms	53652 KB	Output is correct
80	Correct	1043 ms	95760 KB	Output is correct
81	Correct	956 ms	95760 KB	Output is correct
82	Correct	979 ms	95760 KB	Output is correct
83	Correct	1026 ms	95760 KB	Output is correct
84	Correct	939 ms	95760 KB	Output is correct
85	Correct	586 ms	66852 KB	Output is correct
86	Correct	649 ms	72792 KB	Output is correct
87	Correct	1269 ms	95760 KB	Output is correct
88	Correct	1283 ms	95760 KB	Output is correct
89	Correct	429 ms	48900 KB	Output is correct
90	Correct	456 ms	48900 KB	Output is correct
91	Correct	429 ms	48900 KB	Output is correct
92	Correct	1309 ms	95760 KB	Output is correct
93	Correct	1239 ms	95760 KB	Output is correct
94	Correct	886 ms	95760 KB	Output is correct
95	Correct	953 ms	95760 KB	Output is correct
96	Correct	989 ms	95760 KB	Output is correct
97	Correct	556 ms	61704 KB	Output is correct
98	Correct	656 ms	68040 KB	Output is correct
99	Correct	576 ms	55236 KB	Output is correct
100	Correct	466 ms	48900 KB	Output is correct
101	Correct	449 ms	48900 KB	Output is correct
102	Correct	1316 ms	103448 KB	Output is correct
103	Correct	1269 ms	103448 KB	Output is correct
104	Correct	1263 ms	100840 KB	Output is correct
105	Correct	1349 ms	100848 KB	Output is correct
106	Correct	1386 ms	103448 KB	Output is correct
107	Correct	1299 ms	103448 KB	Output is correct
108	Correct	1379 ms	100844 KB	Output is correct
109	Correct	1443 ms	100844 KB	Output is correct
110	Correct	1269 ms	95760 KB	Output is correct
111	Correct	1316 ms	95760 KB	Output is correct
112	Correct	1333 ms	95760 KB	Output is correct
113	Correct	1016 ms	95760 KB	Output is correct
114	Correct	959 ms	95760 KB	Output is correct

Submission #27819

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