Submission #286704

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
286704	2020-08-30T18:30:36 Z	YJU	Port Facility (JOI17_port_facility)	C++14	100 / 100	1883 ms	210668 KB

port_facility

#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=2e6+5;
const ld pi=3.14159265359;
const ll INF=(1LL<<60);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

ll n,d1[N],d2[N],a[N],b[N],to[N],col[N],ans=1;
vector<ll> v[N];

ll f1(ll id){
	return (id==d1[id]?id:d1[id]=f1(d1[id]));
}

ll f2(ll id){
	return (id==d2[id]?id:d2[id]=f2(d2[id]));
}

void DFS(ll id){
	for(auto i:v[id]){
		if(col[i]){
			if(col[i]==col[id])ans=0;
			continue;
		}
		col[i]=3-col[id];
		DFS(i);
	}
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n;
	REP1(i,2*n+1)d1[i]=d2[i]=i;
	REP1(i,n){
		cin>>a[i]>>b[i];
		to[a[i]]=to[b[i]]=i;
		d1[b[i]]=b[i]+1;
	}
	REP1(i,2*n){
		if(b[to[i]]==i){
			ll lst=0;
			for(ll j=f1(a[to[i]]+1);j<=i;j=f1(j+1)){
				j=f2(j);
				v[to[i]].pb(to[j]);v[to[j]].pb(to[i]);
				if(lst)d2[lst]=j;
				lst=j;
			}
			d1[a[to[i]]]=a[to[i]]+1;
		}
	}
	REP1(i,n){
		if(col[i]==0){
			col[i]=1;
			DFS(i);
			ans=ans*2%MOD;
		}
	}
	cout<<ans<<"\n";
	return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	47360 KB	Output is correct
2	Correct	32 ms	47360 KB	Output is correct
3	Correct	32 ms	47352 KB	Output is correct
4	Correct	32 ms	47352 KB	Output is correct
5	Correct	32 ms	47352 KB	Output is correct
6	Correct	33 ms	47352 KB	Output is correct
7	Correct	32 ms	47352 KB	Output is correct
8	Correct	32 ms	47360 KB	Output is correct
9	Correct	32 ms	47392 KB	Output is correct
10	Correct	32 ms	47352 KB	Output is correct
11	Correct	32 ms	47360 KB	Output is correct
12	Correct	32 ms	47352 KB	Output is correct
13	Correct	32 ms	47352 KB	Output is correct
14	Correct	32 ms	47360 KB	Output is correct
15	Correct	32 ms	47352 KB	Output is correct
16	Correct	36 ms	47352 KB	Output is correct
17	Correct	32 ms	47360 KB	Output is correct
18	Correct	32 ms	47360 KB	Output is correct
19	Correct	32 ms	47352 KB	Output is correct
20	Correct	32 ms	47360 KB	Output is correct
21	Correct	32 ms	47352 KB	Output is correct
22	Correct	32 ms	47360 KB	Output is correct
23	Correct	32 ms	47352 KB	Output is correct
24	Correct	32 ms	47488 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	47360 KB	Output is correct
2	Correct	32 ms	47360 KB	Output is correct
3	Correct	32 ms	47352 KB	Output is correct
4	Correct	32 ms	47352 KB	Output is correct
5	Correct	32 ms	47352 KB	Output is correct
6	Correct	33 ms	47352 KB	Output is correct
7	Correct	32 ms	47352 KB	Output is correct
8	Correct	32 ms	47360 KB	Output is correct
9	Correct	32 ms	47392 KB	Output is correct
10	Correct	32 ms	47352 KB	Output is correct
11	Correct	32 ms	47360 KB	Output is correct
12	Correct	32 ms	47352 KB	Output is correct
13	Correct	32 ms	47352 KB	Output is correct
14	Correct	32 ms	47360 KB	Output is correct
15	Correct	32 ms	47352 KB	Output is correct
16	Correct	36 ms	47352 KB	Output is correct
17	Correct	32 ms	47360 KB	Output is correct
18	Correct	32 ms	47360 KB	Output is correct
19	Correct	32 ms	47352 KB	Output is correct
20	Correct	32 ms	47360 KB	Output is correct
21	Correct	32 ms	47352 KB	Output is correct
22	Correct	32 ms	47360 KB	Output is correct
23	Correct	32 ms	47352 KB	Output is correct
24	Correct	32 ms	47488 KB	Output is correct
25	Correct	33 ms	47608 KB	Output is correct
26	Correct	33 ms	47608 KB	Output is correct
27	Correct	33 ms	47744 KB	Output is correct
28	Correct	33 ms	47608 KB	Output is correct
29	Correct	33 ms	47608 KB	Output is correct
30	Correct	33 ms	47608 KB	Output is correct
31	Correct	33 ms	47608 KB	Output is correct
32	Correct	33 ms	47608 KB	Output is correct
33	Correct	33 ms	47608 KB	Output is correct
34	Correct	34 ms	47608 KB	Output is correct
35	Correct	33 ms	47484 KB	Output is correct
36	Correct	33 ms	47480 KB	Output is correct
37	Correct	33 ms	47608 KB	Output is correct
38	Correct	33 ms	47608 KB	Output is correct
39	Correct	32 ms	47616 KB	Output is correct
40	Correct	32 ms	47488 KB	Output is correct
41	Correct	33 ms	47608 KB	Output is correct
42	Correct	33 ms	47616 KB	Output is correct
43	Correct	37 ms	47616 KB	Output is correct
44	Correct	34 ms	47744 KB	Output is correct

Subtask #3
56.0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	47360 KB	Output is correct
2	Correct	32 ms	47360 KB	Output is correct
3	Correct	32 ms	47352 KB	Output is correct
4	Correct	32 ms	47352 KB	Output is correct
5	Correct	32 ms	47352 KB	Output is correct
6	Correct	33 ms	47352 KB	Output is correct
7	Correct	32 ms	47352 KB	Output is correct
8	Correct	32 ms	47360 KB	Output is correct
9	Correct	32 ms	47392 KB	Output is correct
10	Correct	32 ms	47352 KB	Output is correct
11	Correct	32 ms	47360 KB	Output is correct
12	Correct	32 ms	47352 KB	Output is correct
13	Correct	32 ms	47352 KB	Output is correct
14	Correct	32 ms	47360 KB	Output is correct
15	Correct	32 ms	47352 KB	Output is correct
16	Correct	36 ms	47352 KB	Output is correct
17	Correct	32 ms	47360 KB	Output is correct
18	Correct	32 ms	47360 KB	Output is correct
19	Correct	32 ms	47352 KB	Output is correct
20	Correct	32 ms	47360 KB	Output is correct
21	Correct	32 ms	47352 KB	Output is correct
22	Correct	32 ms	47360 KB	Output is correct
23	Correct	32 ms	47352 KB	Output is correct
24	Correct	32 ms	47488 KB	Output is correct
25	Correct	33 ms	47608 KB	Output is correct
26	Correct	33 ms	47608 KB	Output is correct
27	Correct	33 ms	47744 KB	Output is correct
28	Correct	33 ms	47608 KB	Output is correct
29	Correct	33 ms	47608 KB	Output is correct
30	Correct	33 ms	47608 KB	Output is correct
31	Correct	33 ms	47608 KB	Output is correct
32	Correct	33 ms	47608 KB	Output is correct
33	Correct	33 ms	47608 KB	Output is correct
34	Correct	34 ms	47608 KB	Output is correct
35	Correct	33 ms	47484 KB	Output is correct
36	Correct	33 ms	47480 KB	Output is correct
37	Correct	33 ms	47608 KB	Output is correct
38	Correct	33 ms	47608 KB	Output is correct
39	Correct	32 ms	47616 KB	Output is correct
40	Correct	32 ms	47488 KB	Output is correct
41	Correct	33 ms	47608 KB	Output is correct
42	Correct	33 ms	47616 KB	Output is correct
43	Correct	37 ms	47616 KB	Output is correct
44	Correct	34 ms	47744 KB	Output is correct
45	Correct	92 ms	59000 KB	Output is correct
46	Correct	92 ms	59000 KB	Output is correct
47	Correct	89 ms	58872 KB	Output is correct
48	Correct	92 ms	59000 KB	Output is correct
49	Correct	91 ms	59000 KB	Output is correct
50	Correct	94 ms	59244 KB	Output is correct
51	Correct	93 ms	59256 KB	Output is correct
52	Correct	60 ms	55672 KB	Output is correct
53	Correct	66 ms	57252 KB	Output is correct
54	Correct	93 ms	62188 KB	Output is correct
55	Correct	91 ms	61428 KB	Output is correct
56	Correct	91 ms	61300 KB	Output is correct
57	Correct	81 ms	58744 KB	Output is correct
58	Correct	63 ms	55672 KB	Output is correct
59	Correct	72 ms	56184 KB	Output is correct
60	Correct	82 ms	57720 KB	Output is correct
61	Correct	93 ms	58488 KB	Output is correct
62	Correct	80 ms	57720 KB	Output is correct
63	Correct	92 ms	58360 KB	Output is correct
64	Correct	92 ms	58744 KB	Output is correct
65	Correct	141 ms	62320 KB	Output is correct
66	Correct	132 ms	61936 KB	Output is correct
67	Correct	88 ms	61232 KB	Output is correct
68	Correct	94 ms	60824 KB	Output is correct
69	Correct	91 ms	61304 KB	Output is correct
70	Correct	93 ms	61560 KB	Output is correct
71	Correct	83 ms	61168 KB	Output is correct
72	Correct	82 ms	61168 KB	Output is correct
73	Correct	83 ms	61420 KB	Output is correct
74	Correct	87 ms	61380 KB	Output is correct
75	Correct	84 ms	61564 KB	Output is correct
76	Correct	95 ms	63608 KB	Output is correct
77	Correct	95 ms	63480 KB	Output is correct
78	Correct	89 ms	59000 KB	Output is correct
79	Correct	91 ms	58996 KB	Output is correct

Subtask #4
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	47360 KB	Output is correct
2	Correct	32 ms	47360 KB	Output is correct
3	Correct	32 ms	47352 KB	Output is correct
4	Correct	32 ms	47352 KB	Output is correct
5	Correct	32 ms	47352 KB	Output is correct
6	Correct	33 ms	47352 KB	Output is correct
7	Correct	32 ms	47352 KB	Output is correct
8	Correct	32 ms	47360 KB	Output is correct
9	Correct	32 ms	47392 KB	Output is correct
10	Correct	32 ms	47352 KB	Output is correct
11	Correct	32 ms	47360 KB	Output is correct
12	Correct	32 ms	47352 KB	Output is correct
13	Correct	32 ms	47352 KB	Output is correct
14	Correct	32 ms	47360 KB	Output is correct
15	Correct	32 ms	47352 KB	Output is correct
16	Correct	36 ms	47352 KB	Output is correct
17	Correct	32 ms	47360 KB	Output is correct
18	Correct	32 ms	47360 KB	Output is correct
19	Correct	32 ms	47352 KB	Output is correct
20	Correct	32 ms	47360 KB	Output is correct
21	Correct	32 ms	47352 KB	Output is correct
22	Correct	32 ms	47360 KB	Output is correct
23	Correct	32 ms	47352 KB	Output is correct
24	Correct	32 ms	47488 KB	Output is correct
25	Correct	33 ms	47608 KB	Output is correct
26	Correct	33 ms	47608 KB	Output is correct
27	Correct	33 ms	47744 KB	Output is correct
28	Correct	33 ms	47608 KB	Output is correct
29	Correct	33 ms	47608 KB	Output is correct
30	Correct	33 ms	47608 KB	Output is correct
31	Correct	33 ms	47608 KB	Output is correct
32	Correct	33 ms	47608 KB	Output is correct
33	Correct	33 ms	47608 KB	Output is correct
34	Correct	34 ms	47608 KB	Output is correct
35	Correct	33 ms	47484 KB	Output is correct
36	Correct	33 ms	47480 KB	Output is correct
37	Correct	33 ms	47608 KB	Output is correct
38	Correct	33 ms	47608 KB	Output is correct
39	Correct	32 ms	47616 KB	Output is correct
40	Correct	32 ms	47488 KB	Output is correct
41	Correct	33 ms	47608 KB	Output is correct
42	Correct	33 ms	47616 KB	Output is correct
43	Correct	37 ms	47616 KB	Output is correct
44	Correct	34 ms	47744 KB	Output is correct
45	Correct	92 ms	59000 KB	Output is correct
46	Correct	92 ms	59000 KB	Output is correct
47	Correct	89 ms	58872 KB	Output is correct
48	Correct	92 ms	59000 KB	Output is correct
49	Correct	91 ms	59000 KB	Output is correct
50	Correct	94 ms	59244 KB	Output is correct
51	Correct	93 ms	59256 KB	Output is correct
52	Correct	60 ms	55672 KB	Output is correct
53	Correct	66 ms	57252 KB	Output is correct
54	Correct	93 ms	62188 KB	Output is correct
55	Correct	91 ms	61428 KB	Output is correct
56	Correct	91 ms	61300 KB	Output is correct
57	Correct	81 ms	58744 KB	Output is correct
58	Correct	63 ms	55672 KB	Output is correct
59	Correct	72 ms	56184 KB	Output is correct
60	Correct	82 ms	57720 KB	Output is correct
61	Correct	93 ms	58488 KB	Output is correct
62	Correct	80 ms	57720 KB	Output is correct
63	Correct	92 ms	58360 KB	Output is correct
64	Correct	92 ms	58744 KB	Output is correct
65	Correct	141 ms	62320 KB	Output is correct
66	Correct	132 ms	61936 KB	Output is correct
67	Correct	88 ms	61232 KB	Output is correct
68	Correct	94 ms	60824 KB	Output is correct
69	Correct	91 ms	61304 KB	Output is correct
70	Correct	93 ms	61560 KB	Output is correct
71	Correct	83 ms	61168 KB	Output is correct
72	Correct	82 ms	61168 KB	Output is correct
73	Correct	83 ms	61420 KB	Output is correct
74	Correct	87 ms	61380 KB	Output is correct
75	Correct	84 ms	61564 KB	Output is correct
76	Correct	95 ms	63608 KB	Output is correct
77	Correct	95 ms	63480 KB	Output is correct
78	Correct	89 ms	59000 KB	Output is correct
79	Correct	91 ms	58996 KB	Output is correct
80	Correct	1000 ms	165216 KB	Output is correct
81	Correct	988 ms	164984 KB	Output is correct
82	Correct	989 ms	164952 KB	Output is correct
83	Correct	989 ms	164984 KB	Output is correct
84	Correct	985 ms	164984 KB	Output is correct
85	Correct	1012 ms	166588 KB	Output is correct
86	Correct	1018 ms	166896 KB	Output is correct
87	Correct	577 ms	132344 KB	Output is correct
88	Correct	544 ms	148276 KB	Output is correct
89	Correct	1121 ms	195272 KB	Output is correct
90	Correct	1120 ms	187340 KB	Output is correct
91	Correct	1111 ms	187472 KB	Output is correct
92	Correct	877 ms	163704 KB	Output is correct
93	Correct	512 ms	132472 KB	Output is correct
94	Correct	728 ms	144120 KB	Output is correct
95	Correct	943 ms	159224 KB	Output is correct
96	Correct	993 ms	163576 KB	Output is correct
97	Correct	816 ms	152292 KB	Output is correct
98	Correct	985 ms	162028 KB	Output is correct
99	Correct	1053 ms	169180 KB	Output is correct
100	Correct	1883 ms	194640 KB	Output is correct
101	Correct	1883 ms	194824 KB	Output is correct
102	Correct	1067 ms	188796 KB	Output is correct
103	Correct	1055 ms	192940 KB	Output is correct
104	Correct	1028 ms	185716 KB	Output is correct
105	Correct	1048 ms	186236 KB	Output is correct
106	Correct	916 ms	187200 KB	Output is correct
107	Correct	934 ms	187356 KB	Output is correct
108	Correct	916 ms	187216 KB	Output is correct
109	Correct	950 ms	187336 KB	Output is correct
110	Correct	1041 ms	209656 KB	Output is correct
111	Correct	1090 ms	210660 KB	Output is correct
112	Correct	1069 ms	210668 KB	Output is correct
113	Correct	1004 ms	164984 KB	Output is correct
114	Correct	1008 ms	165112 KB	Output is correct

Submission #286704

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