Submission #953474

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
953474	2024-03-26T03:01:49 Z	pcc	Port Facility (JOI17_port_facility)	C++17	100 / 100	1684 ms	189980 KB

port_facility

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

#define pii pair<int,int>
#define fs first
#define sc second
#define ll long long

const ll mod = 1e9+7;
const int mxn = 2e6+10;

ll pw(ll a,ll b){
	ll re = 1;
	while(b){
		if(b&1)re = re*a%mod;
		b>>=1;
		a = a*a%mod;
	}
	return re;
}
ll mad(ll a,ll b){
	a += b;
	return a>=mod?a-mod:a;
}


void print(priority_queue<pii,vector<pii>,less<pii>> pq){
	vector<pii> tmp;
	while(!pq.empty()){
		cerr<<pq.top().fs<<','<<pq.top().sc<<' ';
		tmp.push_back(pq.top());
		pq.pop();
	}
	cerr<<endl;
	return;
}

struct DSU{
	int dsu[mxn],sz[mxn];
	priority_queue<pii,vector<pii>,less<pii>> pq[mxn];
	DSU(){}
	void init(int n){
		for(int i = 0;i<=n;i++)dsu[i] = i,sz[i] = 1;
		return;
	}
	int root(int k){
		return k == dsu[k]?k:dsu[k] = root(dsu[k]);
	}
	void onion(int a,int b){
		a = root(a),b = root(b);
		if(a == b)return;
		if(sz[a]<sz[b])swap(a,b);
		dsu[b] = a;
		sz[a] += sz[b];
		if(pq[a].size()<pq[b].size())pq[a].swap(pq[b]);
		while(!pq[b].empty()){
			pq[a].push(pq[b].top());
			pq[b].pop();
		}
		return;
	}
};

pii arr[mxn];
int N;
int C = 0;
int col[mxn];
DSU dsu;
int op[mxn];
set<pii> st;
bitset<mxn> active;

void update(int r){
	r = dsu.root(r);
	if(!dsu.pq[r].empty()&&st.find(dsu.pq[r].top()) != st.end())st.erase(dsu.pq[r].top());
	while(!dsu.pq[r].empty()&&!active[dsu.pq[r].top().sc])dsu.pq[r].pop();
	if(!dsu.pq[r].empty())st.insert(dsu.pq[r].top());
	return;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N;
	dsu.init(N*2);
	for(int i = 1;i<=N;i++){
		cin>>arr[i].fs>>arr[i].sc;
		op[arr[i].fs] = i;
		op[arr[i].sc] = -i;
		dsu.pq[i*2].push(pii(arr[i].fs,i));
	}

	for(int i = 1;i<=N*2;i++){
		if(op[i]>0){
			active[op[i]] = true;
			update(op[i]*2);
			continue;
		}
		int pos = -op[i];
		active[pos] = false;
		update(dsu.root(pos*2));
		while(!st.empty()&&st.rbegin()->fs>arr[pos].fs){
			if(active[st.rbegin()->sc]){
				dsu.onion(pos*2-1,st.rbegin()->sc*2);
				dsu.onion(pos*2,st.rbegin()->sc*2-1);
			}
			st.erase(*st.rbegin());
		}
		update(dsu.root(pos*2-1));
		//cerr<<i<<":";for(auto &j:st)cerr<<j.fs<<','<<j.sc<<' ';cerr<<endl;
	}

	int ans = 0;
	for(int i = 1;i<=N;i++){
		if(dsu.root(i*2) == dsu.root(i*2-1)){
			cout<<0;
			return 0;
		}
		if(dsu.root(i*2) == i*2)ans++;
		if(dsu.root(i*2-1) == i*2-1)ans++;
	}
	cout<<pw(2,ans>>1);
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	72024 KB	Output is correct
2	Correct	16 ms	72028 KB	Output is correct
3	Correct	15 ms	72028 KB	Output is correct
4	Correct	15 ms	72188 KB	Output is correct
5	Correct	14 ms	72280 KB	Output is correct
6	Correct	14 ms	72184 KB	Output is correct
7	Correct	15 ms	72284 KB	Output is correct
8	Correct	15 ms	72028 KB	Output is correct
9	Correct	16 ms	72028 KB	Output is correct
10	Correct	16 ms	72028 KB	Output is correct
11	Correct	14 ms	72028 KB	Output is correct
12	Correct	14 ms	72220 KB	Output is correct
13	Correct	15 ms	72184 KB	Output is correct
14	Correct	14 ms	72028 KB	Output is correct
15	Correct	14 ms	72028 KB	Output is correct
16	Correct	15 ms	72272 KB	Output is correct
17	Correct	15 ms	72028 KB	Output is correct
18	Correct	16 ms	72028 KB	Output is correct
19	Correct	15 ms	72028 KB	Output is correct
20	Correct	15 ms	72024 KB	Output is correct
21	Correct	14 ms	72284 KB	Output is correct
22	Correct	15 ms	72028 KB	Output is correct
23	Correct	15 ms	72148 KB	Output is correct
24	Correct	15 ms	72024 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	72024 KB	Output is correct
2	Correct	16 ms	72028 KB	Output is correct
3	Correct	15 ms	72028 KB	Output is correct
4	Correct	15 ms	72188 KB	Output is correct
5	Correct	14 ms	72280 KB	Output is correct
6	Correct	14 ms	72184 KB	Output is correct
7	Correct	15 ms	72284 KB	Output is correct
8	Correct	15 ms	72028 KB	Output is correct
9	Correct	16 ms	72028 KB	Output is correct
10	Correct	16 ms	72028 KB	Output is correct
11	Correct	14 ms	72028 KB	Output is correct
12	Correct	14 ms	72220 KB	Output is correct
13	Correct	15 ms	72184 KB	Output is correct
14	Correct	14 ms	72028 KB	Output is correct
15	Correct	14 ms	72028 KB	Output is correct
16	Correct	15 ms	72272 KB	Output is correct
17	Correct	15 ms	72028 KB	Output is correct
18	Correct	16 ms	72028 KB	Output is correct
19	Correct	15 ms	72028 KB	Output is correct
20	Correct	15 ms	72024 KB	Output is correct
21	Correct	14 ms	72284 KB	Output is correct
22	Correct	15 ms	72028 KB	Output is correct
23	Correct	15 ms	72148 KB	Output is correct
24	Correct	15 ms	72024 KB	Output is correct
25	Correct	15 ms	72276 KB	Output is correct
26	Correct	15 ms	72284 KB	Output is correct
27	Correct	15 ms	72284 KB	Output is correct
28	Correct	16 ms	72284 KB	Output is correct
29	Correct	15 ms	72392 KB	Output is correct
30	Correct	15 ms	72280 KB	Output is correct
31	Correct	15 ms	72288 KB	Output is correct
32	Correct	16 ms	72204 KB	Output is correct
33	Correct	15 ms	72284 KB	Output is correct
34	Correct	15 ms	72200 KB	Output is correct
35	Correct	16 ms	72284 KB	Output is correct
36	Correct	15 ms	72400 KB	Output is correct
37	Correct	16 ms	72280 KB	Output is correct
38	Correct	15 ms	72284 KB	Output is correct
39	Correct	15 ms	72284 KB	Output is correct
40	Correct	15 ms	72148 KB	Output is correct
41	Correct	15 ms	72280 KB	Output is correct
42	Correct	16 ms	72284 KB	Output is correct
43	Correct	15 ms	72280 KB	Output is correct
44	Correct	17 ms	72284 KB	Output is correct

Subtask #3
56.0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	72024 KB	Output is correct
2	Correct	16 ms	72028 KB	Output is correct
3	Correct	15 ms	72028 KB	Output is correct
4	Correct	15 ms	72188 KB	Output is correct
5	Correct	14 ms	72280 KB	Output is correct
6	Correct	14 ms	72184 KB	Output is correct
7	Correct	15 ms	72284 KB	Output is correct
8	Correct	15 ms	72028 KB	Output is correct
9	Correct	16 ms	72028 KB	Output is correct
10	Correct	16 ms	72028 KB	Output is correct
11	Correct	14 ms	72028 KB	Output is correct
12	Correct	14 ms	72220 KB	Output is correct
13	Correct	15 ms	72184 KB	Output is correct
14	Correct	14 ms	72028 KB	Output is correct
15	Correct	14 ms	72028 KB	Output is correct
16	Correct	15 ms	72272 KB	Output is correct
17	Correct	15 ms	72028 KB	Output is correct
18	Correct	16 ms	72028 KB	Output is correct
19	Correct	15 ms	72028 KB	Output is correct
20	Correct	15 ms	72024 KB	Output is correct
21	Correct	14 ms	72284 KB	Output is correct
22	Correct	15 ms	72028 KB	Output is correct
23	Correct	15 ms	72148 KB	Output is correct
24	Correct	15 ms	72024 KB	Output is correct
25	Correct	15 ms	72276 KB	Output is correct
26	Correct	15 ms	72284 KB	Output is correct
27	Correct	15 ms	72284 KB	Output is correct
28	Correct	16 ms	72284 KB	Output is correct
29	Correct	15 ms	72392 KB	Output is correct
30	Correct	15 ms	72280 KB	Output is correct
31	Correct	15 ms	72288 KB	Output is correct
32	Correct	16 ms	72204 KB	Output is correct
33	Correct	15 ms	72284 KB	Output is correct
34	Correct	15 ms	72200 KB	Output is correct
35	Correct	16 ms	72284 KB	Output is correct
36	Correct	15 ms	72400 KB	Output is correct
37	Correct	16 ms	72280 KB	Output is correct
38	Correct	15 ms	72284 KB	Output is correct
39	Correct	15 ms	72284 KB	Output is correct
40	Correct	15 ms	72148 KB	Output is correct
41	Correct	15 ms	72280 KB	Output is correct
42	Correct	16 ms	72284 KB	Output is correct
43	Correct	15 ms	72280 KB	Output is correct
44	Correct	17 ms	72284 KB	Output is correct
45	Correct	99 ms	84812 KB	Output is correct
46	Correct	99 ms	84872 KB	Output is correct
47	Correct	126 ms	85232 KB	Output is correct
48	Correct	105 ms	84792 KB	Output is correct
49	Correct	85 ms	85072 KB	Output is correct
50	Correct	91 ms	84872 KB	Output is correct
51	Correct	83 ms	85076 KB	Output is correct
52	Correct	62 ms	82768 KB	Output is correct
53	Correct	74 ms	87380 KB	Output is correct
54	Correct	113 ms	87404 KB	Output is correct
55	Correct	85 ms	86200 KB	Output is correct
56	Correct	90 ms	85940 KB	Output is correct
57	Correct	54 ms	82684 KB	Output is correct
58	Correct	44 ms	82828 KB	Output is correct
59	Correct	79 ms	84380 KB	Output is correct
60	Correct	70 ms	84464 KB	Output is correct
61	Correct	79 ms	84048 KB	Output is correct
62	Correct	72 ms	84240 KB	Output is correct
63	Correct	73 ms	83792 KB	Output is correct
64	Correct	82 ms	84560 KB	Output is correct
65	Correct	86 ms	85840 KB	Output is correct
66	Correct	81 ms	85332 KB	Output is correct
67	Correct	86 ms	85712 KB	Output is correct
68	Correct	96 ms	85708 KB	Output is correct
69	Correct	83 ms	85452 KB	Output is correct
70	Correct	84 ms	85460 KB	Output is correct
71	Correct	86 ms	87380 KB	Output is correct
72	Correct	99 ms	87584 KB	Output is correct
73	Correct	86 ms	87400 KB	Output is correct
74	Correct	89 ms	87508 KB	Output is correct
75	Correct	67 ms	82820 KB	Output is correct
76	Correct	65 ms	82820 KB	Output is correct
77	Correct	70 ms	82900 KB	Output is correct
78	Correct	95 ms	84800 KB	Output is correct
79	Correct	88 ms	84820 KB	Output is correct

Subtask #4
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	38 ms	72024 KB	Output is correct
2	Correct	16 ms	72028 KB	Output is correct
3	Correct	15 ms	72028 KB	Output is correct
4	Correct	15 ms	72188 KB	Output is correct
5	Correct	14 ms	72280 KB	Output is correct
6	Correct	14 ms	72184 KB	Output is correct
7	Correct	15 ms	72284 KB	Output is correct
8	Correct	15 ms	72028 KB	Output is correct
9	Correct	16 ms	72028 KB	Output is correct
10	Correct	16 ms	72028 KB	Output is correct
11	Correct	14 ms	72028 KB	Output is correct
12	Correct	14 ms	72220 KB	Output is correct
13	Correct	15 ms	72184 KB	Output is correct
14	Correct	14 ms	72028 KB	Output is correct
15	Correct	14 ms	72028 KB	Output is correct
16	Correct	15 ms	72272 KB	Output is correct
17	Correct	15 ms	72028 KB	Output is correct
18	Correct	16 ms	72028 KB	Output is correct
19	Correct	15 ms	72028 KB	Output is correct
20	Correct	15 ms	72024 KB	Output is correct
21	Correct	14 ms	72284 KB	Output is correct
22	Correct	15 ms	72028 KB	Output is correct
23	Correct	15 ms	72148 KB	Output is correct
24	Correct	15 ms	72024 KB	Output is correct
25	Correct	15 ms	72276 KB	Output is correct
26	Correct	15 ms	72284 KB	Output is correct
27	Correct	15 ms	72284 KB	Output is correct
28	Correct	16 ms	72284 KB	Output is correct
29	Correct	15 ms	72392 KB	Output is correct
30	Correct	15 ms	72280 KB	Output is correct
31	Correct	15 ms	72288 KB	Output is correct
32	Correct	16 ms	72204 KB	Output is correct
33	Correct	15 ms	72284 KB	Output is correct
34	Correct	15 ms	72200 KB	Output is correct
35	Correct	16 ms	72284 KB	Output is correct
36	Correct	15 ms	72400 KB	Output is correct
37	Correct	16 ms	72280 KB	Output is correct
38	Correct	15 ms	72284 KB	Output is correct
39	Correct	15 ms	72284 KB	Output is correct
40	Correct	15 ms	72148 KB	Output is correct
41	Correct	15 ms	72280 KB	Output is correct
42	Correct	16 ms	72284 KB	Output is correct
43	Correct	15 ms	72280 KB	Output is correct
44	Correct	17 ms	72284 KB	Output is correct
45	Correct	99 ms	84812 KB	Output is correct
46	Correct	99 ms	84872 KB	Output is correct
47	Correct	126 ms	85232 KB	Output is correct
48	Correct	105 ms	84792 KB	Output is correct
49	Correct	85 ms	85072 KB	Output is correct
50	Correct	91 ms	84872 KB	Output is correct
51	Correct	83 ms	85076 KB	Output is correct
52	Correct	62 ms	82768 KB	Output is correct
53	Correct	74 ms	87380 KB	Output is correct
54	Correct	113 ms	87404 KB	Output is correct
55	Correct	85 ms	86200 KB	Output is correct
56	Correct	90 ms	85940 KB	Output is correct
57	Correct	54 ms	82684 KB	Output is correct
58	Correct	44 ms	82828 KB	Output is correct
59	Correct	79 ms	84380 KB	Output is correct
60	Correct	70 ms	84464 KB	Output is correct
61	Correct	79 ms	84048 KB	Output is correct
62	Correct	72 ms	84240 KB	Output is correct
63	Correct	73 ms	83792 KB	Output is correct
64	Correct	82 ms	84560 KB	Output is correct
65	Correct	86 ms	85840 KB	Output is correct
66	Correct	81 ms	85332 KB	Output is correct
67	Correct	86 ms	85712 KB	Output is correct
68	Correct	96 ms	85708 KB	Output is correct
69	Correct	83 ms	85452 KB	Output is correct
70	Correct	84 ms	85460 KB	Output is correct
71	Correct	86 ms	87380 KB	Output is correct
72	Correct	99 ms	87584 KB	Output is correct
73	Correct	86 ms	87400 KB	Output is correct
74	Correct	89 ms	87508 KB	Output is correct
75	Correct	67 ms	82820 KB	Output is correct
76	Correct	65 ms	82820 KB	Output is correct
77	Correct	70 ms	82900 KB	Output is correct
78	Correct	95 ms	84800 KB	Output is correct
79	Correct	88 ms	84820 KB	Output is correct
80	Correct	1353 ms	164844 KB	Output is correct
81	Correct	1383 ms	164844 KB	Output is correct
82	Correct	1353 ms	164948 KB	Output is correct
83	Correct	1364 ms	164948 KB	Output is correct
84	Correct	1343 ms	164728 KB	Output is correct
85	Correct	1352 ms	165952 KB	Output is correct
86	Correct	1379 ms	165628 KB	Output is correct
87	Correct	632 ms	142676 KB	Output is correct
88	Correct	1311 ms	189848 KB	Output is correct
89	Correct	1552 ms	189856 KB	Output is correct
90	Correct	1416 ms	172516 KB	Output is correct
91	Correct	1609 ms	172264 KB	Output is correct
92	Correct	793 ms	142896 KB	Output is correct
93	Correct	633 ms	142884 KB	Output is correct
94	Correct	1134 ms	158280 KB	Output is correct
95	Correct	1203 ms	157432 KB	Output is correct
96	Correct	1313 ms	158028 KB	Output is correct
97	Correct	1148 ms	160336 KB	Output is correct
98	Correct	1222 ms	156952 KB	Output is correct
99	Correct	1319 ms	159876 KB	Output is correct
100	Correct	1322 ms	166372 KB	Output is correct
101	Correct	1335 ms	166480 KB	Output is correct
102	Correct	1400 ms	171644 KB	Output is correct
103	Correct	1422 ms	171160 KB	Output is correct
104	Correct	1337 ms	168764 KB	Output is correct
105	Correct	1316 ms	166884 KB	Output is correct
106	Correct	1549 ms	189868 KB	Output is correct
107	Correct	1609 ms	189980 KB	Output is correct
108	Correct	1684 ms	189864 KB	Output is correct
109	Correct	1588 ms	189852 KB	Output is correct
110	Correct	996 ms	142868 KB	Output is correct
111	Correct	874 ms	142892 KB	Output is correct
112	Correct	1000 ms	142660 KB	Output is correct
113	Correct	1319 ms	164732 KB	Output is correct
114	Correct	1333 ms	164696 KB	Output is correct

Submission #953474

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