Submission #30974

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
30974	2017-08-02T09:40:38 Z	szawinis	Port Facility (JOI17_port_facility)	C++14	100 / 100	2053 ms	65088 KB

port_facility

#include <bits/stdc++.h>
using namespace std;
const long long MOD = (1e9)+7;

inline bool chk_comp(pair<int,int> x, pair<int,int> y) {
	return x.first < y.first && x.second < y.second;
}

int n;
long long ans = 1;
vector<pair<int,int> > a;
vector<int> dsu;
set<pair<int,int> > st;

int root(int v) { return (dsu[v] < 0 ? v : dsu[v] = root(dsu[v])); }
void merge(int u, int v) {
	if((u = root(u)) == (v = root(v))) return;
	if(dsu[u] > dsu[v]) swap(u, v);
	dsu[u] += dsu[v];
	dsu[v] = u;
}
int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin >> n;
	dsu.assign(n << 1, -1);
	for(int i = 0, l, r; i < n; i++) {
		cin >> l >> r;
		a.emplace_back(l, r);
	}
	sort(a.begin(), a.end());
	for(int i = 0, l, r; i < n; i++) {
		tie(l, r) = a[i];
		while(!st.empty() && st.begin()->first < l) st.erase(st.begin());
		auto lim = st.upper_bound(make_pair(r, INT_MAX));
		if(st.empty() || lim == st.begin()) {
			st.emplace(r, i);
			continue;
		}
		auto last = lim; --last;
		for(auto it = st.begin(); it != lim; it++) {
			merge(i, it->second + n); // a b
			merge(i + n, it->second); // b a
			if(root(it->second) == root(last->second)) break;
		}
		st.emplace(r, i);
	}
	int cc = 0;
	for(int i = 0; i < n; i++) {
		cc += dsu[i] < 0;
		if(root(i) == root(i + n)) cout << 0, exit(0);
	}
	long long base = 2;
	while(cc) {
		if(cc & 1) ans = ans * base % MOD; 
		base = base * base % MOD;
		cc >>= 1;
	}
	cout << ans;
}

Subtask #1
10.0 / 10.0

#	Verdict	Memory	Grader output
1	Correct	2184 KB	Output is correct
2	Correct	2184 KB	Output is correct
3	Correct	2184 KB	Output is correct
4	Correct	2184 KB	Output is correct
5	Correct	2184 KB	Output is correct
6	Correct	2184 KB	Output is correct
7	Correct	2184 KB	Output is correct
8	Correct	2184 KB	Output is correct
9	Correct	2184 KB	Output is correct
10	Correct	2184 KB	Output is correct
11	Correct	2184 KB	Output is correct
12	Correct	2184 KB	Output is correct
13	Correct	2184 KB	Output is correct
14	Correct	2184 KB	Output is correct
15	Correct	2184 KB	Output is correct
16	Correct	2184 KB	Output is correct
17	Correct	2184 KB	Output is correct
18	Correct	2184 KB	Output is correct
19	Correct	2184 KB	Output is correct
20	Correct	2184 KB	Output is correct
21	Correct	2184 KB	Output is correct
22	Correct	2184 KB	Output is correct
23	Correct	2184 KB	Output is correct
24	Correct	2184 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Memory	Grader output
1	Correct	2184 KB	Output is correct
2	Correct	2184 KB	Output is correct
3	Correct	2184 KB	Output is correct
4	Correct	2184 KB	Output is correct
5	Correct	2184 KB	Output is correct
6	Correct	2184 KB	Output is correct
7	Correct	2184 KB	Output is correct
8	Correct	2184 KB	Output is correct
9	Correct	2184 KB	Output is correct
10	Correct	2184 KB	Output is correct
11	Correct	2184 KB	Output is correct
12	Correct	2184 KB	Output is correct
13	Correct	2184 KB	Output is correct
14	Correct	2184 KB	Output is correct
15	Correct	2184 KB	Output is correct
16	Correct	2184 KB	Output is correct
17	Correct	2184 KB	Output is correct
18	Correct	2184 KB	Output is correct
19	Correct	2184 KB	Output is correct
20	Correct	2184 KB	Output is correct
21	Correct	2184 KB	Output is correct
22	Correct	2184 KB	Output is correct
23	Correct	2184 KB	Output is correct
24	Correct	2184 KB	Output is correct
25	Correct	2184 KB	Output is correct
26	Correct	2184 KB	Output is correct
27	Correct	2184 KB	Output is correct
28	Correct	2184 KB	Output is correct
29	Correct	2184 KB	Output is correct
30	Correct	2184 KB	Output is correct
31	Correct	2184 KB	Output is correct
32	Correct	2184 KB	Output is correct
33	Correct	2184 KB	Output is correct
34	Correct	2184 KB	Output is correct
35	Correct	2184 KB	Output is correct
36	Correct	2316 KB	Output is correct
37	Correct	2316 KB	Output is correct
38	Correct	2184 KB	Output is correct
39	Correct	2184 KB	Output is correct
40	Correct	2184 KB	Output is correct
41	Correct	2316 KB	Output is correct
42	Correct	2316 KB	Output is correct
43	Correct	2184 KB	Output is correct
44	Correct	2184 KB	Output is correct

Subtask #3
56.0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2184 KB	Output is correct
2	Correct	0 ms	2184 KB	Output is correct
3	Correct	0 ms	2184 KB	Output is correct
4	Correct	0 ms	2184 KB	Output is correct
5	Correct	0 ms	2184 KB	Output is correct
6	Correct	0 ms	2184 KB	Output is correct
7	Correct	0 ms	2184 KB	Output is correct
8	Correct	0 ms	2184 KB	Output is correct
9	Correct	0 ms	2184 KB	Output is correct
10	Correct	0 ms	2184 KB	Output is correct
11	Correct	0 ms	2184 KB	Output is correct
12	Correct	0 ms	2184 KB	Output is correct
13	Correct	0 ms	2184 KB	Output is correct
14	Correct	0 ms	2184 KB	Output is correct
15	Correct	0 ms	2184 KB	Output is correct
16	Correct	0 ms	2184 KB	Output is correct
17	Correct	0 ms	2184 KB	Output is correct
18	Correct	0 ms	2184 KB	Output is correct
19	Correct	0 ms	2184 KB	Output is correct
20	Correct	0 ms	2184 KB	Output is correct
21	Correct	0 ms	2184 KB	Output is correct
22	Correct	0 ms	2184 KB	Output is correct
23	Correct	0 ms	2184 KB	Output is correct
24	Correct	0 ms	2184 KB	Output is correct
25	Correct	0 ms	2184 KB	Output is correct
26	Correct	0 ms	2184 KB	Output is correct
27	Correct	0 ms	2184 KB	Output is correct
28	Correct	0 ms	2184 KB	Output is correct
29	Correct	0 ms	2184 KB	Output is correct
30	Correct	0 ms	2184 KB	Output is correct
31	Correct	0 ms	2184 KB	Output is correct
32	Correct	0 ms	2184 KB	Output is correct
33	Correct	0 ms	2184 KB	Output is correct
34	Correct	0 ms	2184 KB	Output is correct
35	Correct	0 ms	2184 KB	Output is correct
36	Correct	0 ms	2316 KB	Output is correct
37	Correct	0 ms	2316 KB	Output is correct
38	Correct	0 ms	2184 KB	Output is correct
39	Correct	0 ms	2184 KB	Output is correct
40	Correct	0 ms	2184 KB	Output is correct
41	Correct	0 ms	2316 KB	Output is correct
42	Correct	0 ms	2316 KB	Output is correct
43	Correct	0 ms	2184 KB	Output is correct
44	Correct	0 ms	2184 KB	Output is correct
45	Correct	63 ms	6272 KB	Output is correct
46	Correct	63 ms	6272 KB	Output is correct
47	Correct	56 ms	6272 KB	Output is correct
48	Correct	69 ms	6272 KB	Output is correct
49	Correct	56 ms	6272 KB	Output is correct
50	Correct	53 ms	6272 KB	Output is correct
51	Correct	63 ms	6272 KB	Output is correct
52	Correct	36 ms	4544 KB	Output is correct
53	Correct	76 ms	8648 KB	Output is correct
54	Correct	83 ms	8648 KB	Output is correct
55	Correct	69 ms	6272 KB	Output is correct
56	Correct	66 ms	6272 KB	Output is correct
57	Correct	46 ms	4544 KB	Output is correct
58	Correct	36 ms	4544 KB	Output is correct
59	Correct	59 ms	5480 KB	Output is correct
60	Correct	63 ms	5480 KB	Output is correct
61	Correct	79 ms	5480 KB	Output is correct
62	Correct	63 ms	5480 KB	Output is correct
63	Correct	59 ms	5480 KB	Output is correct
64	Correct	66 ms	5612 KB	Output is correct
65	Correct	116 ms	6272 KB	Output is correct
66	Correct	106 ms	6272 KB	Output is correct
67	Correct	86 ms	6272 KB	Output is correct
68	Correct	86 ms	6272 KB	Output is correct
69	Correct	73 ms	7064 KB	Output is correct
70	Correct	73 ms	7064 KB	Output is correct
71	Correct	83 ms	8648 KB	Output is correct
72	Correct	76 ms	8648 KB	Output is correct
73	Correct	76 ms	8648 KB	Output is correct
74	Correct	76 ms	8648 KB	Output is correct
75	Correct	49 ms	4544 KB	Output is correct
76	Correct	46 ms	4544 KB	Output is correct
77	Correct	36 ms	4544 KB	Output is correct
78	Correct	63 ms	6272 KB	Output is correct
79	Correct	63 ms	6272 KB	Output is correct

Subtask #4
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	2184 KB	Output is correct
2	Correct	0 ms	2184 KB	Output is correct
3	Correct	0 ms	2184 KB	Output is correct
4	Correct	0 ms	2184 KB	Output is correct
5	Correct	0 ms	2184 KB	Output is correct
6	Correct	0 ms	2184 KB	Output is correct
7	Correct	0 ms	2184 KB	Output is correct
8	Correct	0 ms	2184 KB	Output is correct
9	Correct	0 ms	2184 KB	Output is correct
10	Correct	0 ms	2184 KB	Output is correct
11	Correct	0 ms	2184 KB	Output is correct
12	Correct	0 ms	2184 KB	Output is correct
13	Correct	0 ms	2184 KB	Output is correct
14	Correct	0 ms	2184 KB	Output is correct
15	Correct	0 ms	2184 KB	Output is correct
16	Correct	0 ms	2184 KB	Output is correct
17	Correct	0 ms	2184 KB	Output is correct
18	Correct	0 ms	2184 KB	Output is correct
19	Correct	0 ms	2184 KB	Output is correct
20	Correct	0 ms	2184 KB	Output is correct
21	Correct	0 ms	2184 KB	Output is correct
22	Correct	0 ms	2184 KB	Output is correct
23	Correct	0 ms	2184 KB	Output is correct
24	Correct	0 ms	2184 KB	Output is correct
25	Correct	0 ms	2184 KB	Output is correct
26	Correct	0 ms	2184 KB	Output is correct
27	Correct	0 ms	2184 KB	Output is correct
28	Correct	0 ms	2184 KB	Output is correct
29	Correct	0 ms	2184 KB	Output is correct
30	Correct	0 ms	2184 KB	Output is correct
31	Correct	0 ms	2184 KB	Output is correct
32	Correct	0 ms	2184 KB	Output is correct
33	Correct	0 ms	2184 KB	Output is correct
34	Correct	0 ms	2184 KB	Output is correct
35	Correct	0 ms	2184 KB	Output is correct
36	Correct	0 ms	2316 KB	Output is correct
37	Correct	0 ms	2316 KB	Output is correct
38	Correct	0 ms	2184 KB	Output is correct
39	Correct	0 ms	2184 KB	Output is correct
40	Correct	0 ms	2184 KB	Output is correct
41	Correct	0 ms	2316 KB	Output is correct
42	Correct	0 ms	2316 KB	Output is correct
43	Correct	0 ms	2184 KB	Output is correct
44	Correct	0 ms	2184 KB	Output is correct
45	Correct	63 ms	6272 KB	Output is correct
46	Correct	63 ms	6272 KB	Output is correct
47	Correct	56 ms	6272 KB	Output is correct
48	Correct	69 ms	6272 KB	Output is correct
49	Correct	56 ms	6272 KB	Output is correct
50	Correct	53 ms	6272 KB	Output is correct
51	Correct	63 ms	6272 KB	Output is correct
52	Correct	36 ms	4544 KB	Output is correct
53	Correct	76 ms	8648 KB	Output is correct
54	Correct	83 ms	8648 KB	Output is correct
55	Correct	69 ms	6272 KB	Output is correct
56	Correct	66 ms	6272 KB	Output is correct
57	Correct	46 ms	4544 KB	Output is correct
58	Correct	36 ms	4544 KB	Output is correct
59	Correct	59 ms	5480 KB	Output is correct
60	Correct	63 ms	5480 KB	Output is correct
61	Correct	79 ms	5480 KB	Output is correct
62	Correct	63 ms	5480 KB	Output is correct
63	Correct	59 ms	5480 KB	Output is correct
64	Correct	66 ms	5612 KB	Output is correct
65	Correct	116 ms	6272 KB	Output is correct
66	Correct	106 ms	6272 KB	Output is correct
67	Correct	86 ms	6272 KB	Output is correct
68	Correct	86 ms	6272 KB	Output is correct
69	Correct	73 ms	7064 KB	Output is correct
70	Correct	73 ms	7064 KB	Output is correct
71	Correct	83 ms	8648 KB	Output is correct
72	Correct	76 ms	8648 KB	Output is correct
73	Correct	76 ms	8648 KB	Output is correct
74	Correct	76 ms	8648 KB	Output is correct
75	Correct	49 ms	4544 KB	Output is correct
76	Correct	46 ms	4544 KB	Output is correct
77	Correct	36 ms	4544 KB	Output is correct
78	Correct	63 ms	6272 KB	Output is correct
79	Correct	63 ms	6272 KB	Output is correct
80	Correct	659 ms	41592 KB	Output is correct
81	Correct	703 ms	41592 KB	Output is correct
82	Correct	669 ms	41592 KB	Output is correct
83	Correct	679 ms	41592 KB	Output is correct
84	Correct	726 ms	41592 KB	Output is correct
85	Correct	679 ms	41592 KB	Output is correct
86	Correct	653 ms	41592 KB	Output is correct
87	Correct	379 ms	22328 KB	Output is correct
88	Correct	983 ms	65088 KB	Output is correct
89	Correct	1099 ms	65088 KB	Output is correct
90	Correct	1046 ms	41592 KB	Output is correct
91	Correct	959 ms	41592 KB	Output is correct
92	Correct	456 ms	22328 KB	Output is correct
93	Correct	466 ms	22328 KB	Output is correct
94	Correct	556 ms	33804 KB	Output is correct
95	Correct	616 ms	33804 KB	Output is correct
96	Correct	733 ms	33936 KB	Output is correct
97	Correct	593 ms	33804 KB	Output is correct
98	Correct	696 ms	33804 KB	Output is correct
99	Correct	616 ms	33804 KB	Output is correct
100	Correct	2053 ms	41592 KB	Output is correct
101	Correct	1926 ms	41592 KB	Output is correct
102	Correct	893 ms	41592 KB	Output is correct
103	Correct	916 ms	41592 KB	Output is correct
104	Correct	853 ms	49380 KB	Output is correct
105	Correct	969 ms	49380 KB	Output is correct
106	Correct	1012 ms	65088 KB	Output is correct
107	Correct	1012 ms	65088 KB	Output is correct
108	Correct	1039 ms	65088 KB	Output is correct
109	Correct	1056 ms	65088 KB	Output is correct
110	Correct	443 ms	22328 KB	Output is correct
111	Correct	506 ms	22328 KB	Output is correct
112	Correct	466 ms	22328 KB	Output is correct
113	Correct	613 ms	41592 KB	Output is correct
114	Correct	699 ms	41592 KB	Output is correct

Submission #30974

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