Submission #27945

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
27945	2017-07-14T13:06:30 Z	suhgyuho_william	Port Facility (JOI17_port_facility)	C++14	100 / 100	1403 ms	80012 KB

port_facility

#include <bits/stdc++.h>

#define lld long long
#define pii pair<int,int>
#define pll pair<lld,lld>
#define pb push_back
#define next nextt
#define left leftt
#define right rightt
#define Inf 1000000000
#define Linf 1000000000000000000LL
#define Mod 1000000007LL

using namespace std;

int N; lld ans,inv;
struct data{
	int x,y;
	bool operator < (const data &cmp) const{
		if(x != cmp.x) return x < cmp.x;
		return y < cmp.y;
	}
}a[1000002];
int par[2000002];
map<int,int> Map;

void impossible(){puts("0");exit(0);}
int getpar(int x){return (x == par[x])?x:(par[x]=getpar(par[x]));};
void merge(int x,int y){
	x = getpar(x); y = getpar(y);
	par[x] = y;
}
void uni(int x,int y){
	merge(x,y+N); merge(x+N,y);
	if(getpar(x) == getpar(x+N) || getpar(y) == getpar(y+N)) impossible();
}

int main(){
	scanf("%d",&N); ans = 1;
	for(int i=1; i<=N; i++){
		scanf("%d %d",&a[i].x,&a[i].y);
	}
	sort(a+1,a+N+1);
	iota(par+1,par+N*2+1,1);
	for(int i=1; i<=N; i++){
		auto it1 = Map.lower_bound(a[i].x);
		auto it2 = Map.lower_bound(a[i].y);
		while(it1 != it2){
			uni(it1->second,i);
			auto it = it2; it--;
			if(it != it2 && getpar(it->second) == getpar(it1->second)) break;
			it1++;
		}
		Map[a[i].y] = i;
	}
	for(int i=1; i<=N; i++){
		if(getpar(i) == i){
			ans *= 2; ans %= Mod;
		}
	}
	printf("%lld\n",ans);

	return 0;
}

Compilation message

port_facility.cpp: In function 'int main()':
port_facility.cpp:39:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&N); ans = 1;
                ^
port_facility.cpp:41:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&a[i].x,&a[i].y);
                                 ^

Subtask #1
10.0 / 10.0

#	Verdict	Memory	Grader output
1	Correct	17652 KB	Output is correct
2	Correct	17652 KB	Output is correct
3	Correct	17652 KB	Output is correct
4	Correct	17652 KB	Output is correct
5	Correct	17652 KB	Output is correct
6	Correct	17652 KB	Output is correct
7	Correct	17652 KB	Output is correct
8	Correct	17652 KB	Output is correct
9	Correct	17652 KB	Output is correct
10	Correct	17652 KB	Output is correct
11	Correct	17652 KB	Output is correct
12	Correct	17652 KB	Output is correct
13	Correct	17652 KB	Output is correct
14	Correct	17652 KB	Output is correct
15	Correct	17652 KB	Output is correct
16	Correct	17652 KB	Output is correct
17	Correct	17652 KB	Output is correct
18	Correct	17652 KB	Output is correct
19	Correct	17652 KB	Output is correct
20	Correct	17652 KB	Output is correct
21	Correct	17652 KB	Output is correct
22	Correct	17652 KB	Output is correct
23	Correct	17652 KB	Output is correct
24	Correct	17652 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Memory	Grader output
1	Correct	17652 KB	Output is correct
2	Correct	17652 KB	Output is correct
3	Correct	17652 KB	Output is correct
4	Correct	17652 KB	Output is correct
5	Correct	17652 KB	Output is correct
6	Correct	17652 KB	Output is correct
7	Correct	17652 KB	Output is correct
8	Correct	17652 KB	Output is correct
9	Correct	17652 KB	Output is correct
10	Correct	17652 KB	Output is correct
11	Correct	17652 KB	Output is correct
12	Correct	17652 KB	Output is correct
13	Correct	17652 KB	Output is correct
14	Correct	17652 KB	Output is correct
15	Correct	17652 KB	Output is correct
16	Correct	17652 KB	Output is correct
17	Correct	17652 KB	Output is correct
18	Correct	17652 KB	Output is correct
19	Correct	17652 KB	Output is correct
20	Correct	17652 KB	Output is correct
21	Correct	17652 KB	Output is correct
22	Correct	17652 KB	Output is correct
23	Correct	17652 KB	Output is correct
24	Correct	17652 KB	Output is correct
25	Correct	17784 KB	Output is correct
26	Correct	17784 KB	Output is correct
27	Correct	17784 KB	Output is correct
28	Correct	17784 KB	Output is correct
29	Correct	17784 KB	Output is correct
30	Correct	17784 KB	Output is correct
31	Correct	17784 KB	Output is correct
32	Correct	17784 KB	Output is correct
33	Correct	17784 KB	Output is correct
34	Correct	17652 KB	Output is correct
35	Correct	17784 KB	Output is correct
36	Correct	17784 KB	Output is correct
37	Correct	17652 KB	Output is correct
38	Correct	17652 KB	Output is correct
39	Correct	17784 KB	Output is correct
40	Correct	17784 KB	Output is correct
41	Correct	17784 KB	Output is correct
42	Correct	17784 KB	Output is correct
43	Correct	17784 KB	Output is correct
44	Correct	17784 KB	Output is correct

Subtask #3
56.0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	17652 KB	Output is correct
2	Correct	0 ms	17652 KB	Output is correct
3	Correct	0 ms	17652 KB	Output is correct
4	Correct	0 ms	17652 KB	Output is correct
5	Correct	0 ms	17652 KB	Output is correct
6	Correct	0 ms	17652 KB	Output is correct
7	Correct	0 ms	17652 KB	Output is correct
8	Correct	0 ms	17652 KB	Output is correct
9	Correct	0 ms	17652 KB	Output is correct
10	Correct	0 ms	17652 KB	Output is correct
11	Correct	0 ms	17652 KB	Output is correct
12	Correct	0 ms	17652 KB	Output is correct
13	Correct	0 ms	17652 KB	Output is correct
14	Correct	0 ms	17652 KB	Output is correct
15	Correct	0 ms	17652 KB	Output is correct
16	Correct	0 ms	17652 KB	Output is correct
17	Correct	0 ms	17652 KB	Output is correct
18	Correct	0 ms	17652 KB	Output is correct
19	Correct	0 ms	17652 KB	Output is correct
20	Correct	0 ms	17652 KB	Output is correct
21	Correct	0 ms	17652 KB	Output is correct
22	Correct	0 ms	17652 KB	Output is correct
23	Correct	0 ms	17652 KB	Output is correct
24	Correct	0 ms	17652 KB	Output is correct
25	Correct	0 ms	17784 KB	Output is correct
26	Correct	0 ms	17784 KB	Output is correct
27	Correct	0 ms	17784 KB	Output is correct
28	Correct	0 ms	17784 KB	Output is correct
29	Correct	0 ms	17784 KB	Output is correct
30	Correct	0 ms	17784 KB	Output is correct
31	Correct	0 ms	17784 KB	Output is correct
32	Correct	0 ms	17784 KB	Output is correct
33	Correct	0 ms	17784 KB	Output is correct
34	Correct	0 ms	17652 KB	Output is correct
35	Correct	0 ms	17784 KB	Output is correct
36	Correct	0 ms	17784 KB	Output is correct
37	Correct	0 ms	17652 KB	Output is correct
38	Correct	0 ms	17652 KB	Output is correct
39	Correct	0 ms	17784 KB	Output is correct
40	Correct	0 ms	17784 KB	Output is correct
41	Correct	0 ms	17784 KB	Output is correct
42	Correct	0 ms	17784 KB	Output is correct
43	Correct	0 ms	17784 KB	Output is correct
44	Correct	0 ms	17784 KB	Output is correct
45	Correct	106 ms	22404 KB	Output is correct
46	Correct	86 ms	22404 KB	Output is correct
47	Correct	109 ms	22404 KB	Output is correct
48	Correct	93 ms	22404 KB	Output is correct
49	Correct	93 ms	22404 KB	Output is correct
50	Correct	53 ms	18708 KB	Output is correct
51	Correct	66 ms	19632 KB	Output is correct
52	Correct	99 ms	22404 KB	Output is correct
53	Correct	89 ms	22404 KB	Output is correct
54	Correct	36 ms	17652 KB	Output is correct
55	Correct	39 ms	17652 KB	Output is correct
56	Correct	46 ms	17652 KB	Output is correct
57	Correct	93 ms	22404 KB	Output is correct
58	Correct	96 ms	22404 KB	Output is correct
59	Correct	106 ms	22404 KB	Output is correct
60	Correct	86 ms	22404 KB	Output is correct
61	Correct	89 ms	22404 KB	Output is correct
62	Correct	33 ms	17784 KB	Output is correct
63	Correct	39 ms	17652 KB	Output is correct
64	Correct	39 ms	17652 KB	Output is correct
65	Correct	36 ms	17652 KB	Output is correct
66	Correct	43 ms	17652 KB	Output is correct
67	Correct	106 ms	22664 KB	Output is correct
68	Correct	93 ms	22668 KB	Output is correct
69	Correct	99 ms	22624 KB	Output is correct
70	Correct	99 ms	22624 KB	Output is correct
71	Correct	96 ms	23056 KB	Output is correct
72	Correct	89 ms	23056 KB	Output is correct
73	Correct	103 ms	23320 KB	Output is correct
74	Correct	93 ms	23320 KB	Output is correct
75	Correct	96 ms	23840 KB	Output is correct
76	Correct	99 ms	23840 KB	Output is correct
77	Correct	96 ms	23840 KB	Output is correct
78	Correct	93 ms	22404 KB	Output is correct
79	Correct	89 ms	22404 KB	Output is correct

Subtask #4
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	17652 KB	Output is correct
2	Correct	0 ms	17652 KB	Output is correct
3	Correct	0 ms	17652 KB	Output is correct
4	Correct	0 ms	17652 KB	Output is correct
5	Correct	0 ms	17652 KB	Output is correct
6	Correct	0 ms	17652 KB	Output is correct
7	Correct	0 ms	17652 KB	Output is correct
8	Correct	0 ms	17652 KB	Output is correct
9	Correct	0 ms	17652 KB	Output is correct
10	Correct	0 ms	17652 KB	Output is correct
11	Correct	0 ms	17652 KB	Output is correct
12	Correct	0 ms	17652 KB	Output is correct
13	Correct	0 ms	17652 KB	Output is correct
14	Correct	0 ms	17652 KB	Output is correct
15	Correct	0 ms	17652 KB	Output is correct
16	Correct	0 ms	17652 KB	Output is correct
17	Correct	0 ms	17652 KB	Output is correct
18	Correct	0 ms	17652 KB	Output is correct
19	Correct	0 ms	17652 KB	Output is correct
20	Correct	0 ms	17652 KB	Output is correct
21	Correct	0 ms	17652 KB	Output is correct
22	Correct	0 ms	17652 KB	Output is correct
23	Correct	0 ms	17652 KB	Output is correct
24	Correct	0 ms	17652 KB	Output is correct
25	Correct	0 ms	17784 KB	Output is correct
26	Correct	0 ms	17784 KB	Output is correct
27	Correct	0 ms	17784 KB	Output is correct
28	Correct	0 ms	17784 KB	Output is correct
29	Correct	0 ms	17784 KB	Output is correct
30	Correct	0 ms	17784 KB	Output is correct
31	Correct	0 ms	17784 KB	Output is correct
32	Correct	0 ms	17784 KB	Output is correct
33	Correct	0 ms	17784 KB	Output is correct
34	Correct	0 ms	17652 KB	Output is correct
35	Correct	0 ms	17784 KB	Output is correct
36	Correct	0 ms	17784 KB	Output is correct
37	Correct	0 ms	17652 KB	Output is correct
38	Correct	0 ms	17652 KB	Output is correct
39	Correct	0 ms	17784 KB	Output is correct
40	Correct	0 ms	17784 KB	Output is correct
41	Correct	0 ms	17784 KB	Output is correct
42	Correct	0 ms	17784 KB	Output is correct
43	Correct	0 ms	17784 KB	Output is correct
44	Correct	0 ms	17784 KB	Output is correct
45	Correct	106 ms	22404 KB	Output is correct
46	Correct	86 ms	22404 KB	Output is correct
47	Correct	109 ms	22404 KB	Output is correct
48	Correct	93 ms	22404 KB	Output is correct
49	Correct	93 ms	22404 KB	Output is correct
50	Correct	53 ms	18708 KB	Output is correct
51	Correct	66 ms	19632 KB	Output is correct
52	Correct	99 ms	22404 KB	Output is correct
53	Correct	89 ms	22404 KB	Output is correct
54	Correct	36 ms	17652 KB	Output is correct
55	Correct	39 ms	17652 KB	Output is correct
56	Correct	46 ms	17652 KB	Output is correct
57	Correct	93 ms	22404 KB	Output is correct
58	Correct	96 ms	22404 KB	Output is correct
59	Correct	106 ms	22404 KB	Output is correct
60	Correct	86 ms	22404 KB	Output is correct
61	Correct	89 ms	22404 KB	Output is correct
62	Correct	33 ms	17784 KB	Output is correct
63	Correct	39 ms	17652 KB	Output is correct
64	Correct	39 ms	17652 KB	Output is correct
65	Correct	36 ms	17652 KB	Output is correct
66	Correct	43 ms	17652 KB	Output is correct
67	Correct	106 ms	22664 KB	Output is correct
68	Correct	93 ms	22668 KB	Output is correct
69	Correct	99 ms	22624 KB	Output is correct
70	Correct	99 ms	22624 KB	Output is correct
71	Correct	96 ms	23056 KB	Output is correct
72	Correct	89 ms	23056 KB	Output is correct
73	Correct	103 ms	23320 KB	Output is correct
74	Correct	93 ms	23320 KB	Output is correct
75	Correct	96 ms	23840 KB	Output is correct
76	Correct	99 ms	23840 KB	Output is correct
77	Correct	96 ms	23840 KB	Output is correct
78	Correct	93 ms	22404 KB	Output is correct
79	Correct	89 ms	22404 KB	Output is correct
80	Correct	1066 ms	64512 KB	Output is correct
81	Correct	996 ms	64512 KB	Output is correct
82	Correct	923 ms	64512 KB	Output is correct
83	Correct	976 ms	64512 KB	Output is correct
84	Correct	1036 ms	64512 KB	Output is correct
85	Correct	669 ms	35604 KB	Output is correct
86	Correct	689 ms	41544 KB	Output is correct
87	Correct	1216 ms	64512 KB	Output is correct
88	Correct	1229 ms	64512 KB	Output is correct
89	Correct	459 ms	17652 KB	Output is correct
90	Correct	446 ms	17652 KB	Output is correct
91	Correct	526 ms	17652 KB	Output is correct
92	Correct	1259 ms	64512 KB	Output is correct
93	Correct	1256 ms	64512 KB	Output is correct
94	Correct	869 ms	64512 KB	Output is correct
95	Correct	983 ms	64512 KB	Output is correct
96	Correct	1012 ms	64512 KB	Output is correct
97	Correct	576 ms	30456 KB	Output is correct
98	Correct	726 ms	36792 KB	Output is correct
99	Correct	499 ms	23988 KB	Output is correct
100	Correct	396 ms	17652 KB	Output is correct
101	Correct	436 ms	17652 KB	Output is correct
102	Correct	1343 ms	68292 KB	Output is correct
103	Correct	1366 ms	68296 KB	Output is correct
104	Correct	1403 ms	67856 KB	Output is correct
105	Correct	1336 ms	67852 KB	Output is correct
106	Correct	1353 ms	72196 KB	Output is correct
107	Correct	1403 ms	72200 KB	Output is correct
108	Correct	1339 ms	74804 KB	Output is correct
109	Correct	1376 ms	74800 KB	Output is correct
110	Correct	1363 ms	80008 KB	Output is correct
111	Correct	1363 ms	80012 KB	Output is correct
112	Correct	1333 ms	80012 KB	Output is correct
113	Correct	956 ms	64512 KB	Output is correct
114	Correct	1053 ms	64512 KB	Output is correct

Submission #27945

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