Submission #77736

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
77736	2018-09-30T06:23:55 Z	szawinis	Port Facility (JOI17_port_facility)	C++17	100 / 100	2446 ms	560692 KB

port_facility

#include <bits/stdc++.h>
#define long long long
using namespace std;
const long MOD = 1e9+7;
const int N = 1 << 21;

struct seg {
	int l, r, i;
	seg() { l = r = i = MOD; }
	seg(int l, int r, int i): l(l), r(r), i(i) {}
	seg(int r): r(r) { l = i = MOD; }
	bool operator<(const seg& rhs) const { return r < rhs.r; }
};

int n;
vector<seg> a;
set<seg> st;

int dsu[N];
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;
	dsu[u] += dsu[v];
	dsu[v] = u;
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin >> n;
	for(int i = 0, x, y; i < n; i++) {
		cin >> x >> y;
		a.emplace_back(x, y, i);
	}
	fill(dsu, dsu+N, -1);
	sort(a.begin(), a.end(), [] (seg x, seg y) { return x.l < y.l; });
	for(seg s: a) {
		while(!st.empty() && st.begin()->r < s.l) st.erase(st.begin());

		auto ed = st.upper_bound(seg(s.r));
		if(st.empty() || ed == st.begin()) {
			st.insert(s);
			continue;
		}

		for(auto it = st.begin(); it != ed; it++) {
			int u = s.i, v = it->i;
			merge(u, v + n);
			merge(u + n, v);
			if(root(v) == root(prev(ed)->i)) break;
		}	

		st.insert(s);
	}
	for(int i = 0; i < n; i++) if(root(i) == root(i + n)) cout << 0, exit(0);
	long ans = 1;
	for(int i = 0; i < n; i++) if(root(i) == i) ans = ans * 2 % MOD;
	cout << ans;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	8568 KB	Output is correct
2	Correct	9 ms	8584 KB	Output is correct
3	Correct	8 ms	8640 KB	Output is correct
4	Correct	9 ms	8668 KB	Output is correct
5	Correct	9 ms	8672 KB	Output is correct
6	Correct	9 ms	8752 KB	Output is correct
7	Correct	9 ms	8760 KB	Output is correct
8	Correct	9 ms	8868 KB	Output is correct
9	Correct	9 ms	8880 KB	Output is correct
10	Correct	9 ms	8880 KB	Output is correct
11	Correct	9 ms	8880 KB	Output is correct
12	Correct	9 ms	8880 KB	Output is correct
13	Correct	9 ms	8880 KB	Output is correct
14	Correct	9 ms	8880 KB	Output is correct
15	Correct	9 ms	8880 KB	Output is correct
16	Correct	9 ms	8888 KB	Output is correct
17	Correct	9 ms	8888 KB	Output is correct
18	Correct	9 ms	8892 KB	Output is correct
19	Correct	9 ms	8896 KB	Output is correct
20	Correct	9 ms	8900 KB	Output is correct
21	Correct	8 ms	8904 KB	Output is correct
22	Correct	8 ms	8924 KB	Output is correct
23	Correct	9 ms	8924 KB	Output is correct
24	Correct	8 ms	8924 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	8568 KB	Output is correct
2	Correct	9 ms	8584 KB	Output is correct
3	Correct	8 ms	8640 KB	Output is correct
4	Correct	9 ms	8668 KB	Output is correct
5	Correct	9 ms	8672 KB	Output is correct
6	Correct	9 ms	8752 KB	Output is correct
7	Correct	9 ms	8760 KB	Output is correct
8	Correct	9 ms	8868 KB	Output is correct
9	Correct	9 ms	8880 KB	Output is correct
10	Correct	9 ms	8880 KB	Output is correct
11	Correct	9 ms	8880 KB	Output is correct
12	Correct	9 ms	8880 KB	Output is correct
13	Correct	9 ms	8880 KB	Output is correct
14	Correct	9 ms	8880 KB	Output is correct
15	Correct	9 ms	8880 KB	Output is correct
16	Correct	9 ms	8888 KB	Output is correct
17	Correct	9 ms	8888 KB	Output is correct
18	Correct	9 ms	8892 KB	Output is correct
19	Correct	9 ms	8896 KB	Output is correct
20	Correct	9 ms	8900 KB	Output is correct
21	Correct	8 ms	8904 KB	Output is correct
22	Correct	8 ms	8924 KB	Output is correct
23	Correct	9 ms	8924 KB	Output is correct
24	Correct	8 ms	8924 KB	Output is correct
25	Correct	13 ms	9048 KB	Output is correct
26	Correct	10 ms	9068 KB	Output is correct
27	Correct	11 ms	9068 KB	Output is correct
28	Correct	10 ms	9108 KB	Output is correct
29	Correct	10 ms	9108 KB	Output is correct
30	Correct	13 ms	9148 KB	Output is correct
31	Correct	13 ms	9152 KB	Output is correct
32	Correct	13 ms	9164 KB	Output is correct
33	Correct	10 ms	9208 KB	Output is correct
34	Correct	10 ms	9228 KB	Output is correct
35	Correct	9 ms	9228 KB	Output is correct
36	Correct	10 ms	9256 KB	Output is correct
37	Correct	10 ms	9256 KB	Output is correct
38	Correct	13 ms	9256 KB	Output is correct
39	Correct	9 ms	9256 KB	Output is correct
40	Correct	10 ms	9308 KB	Output is correct
41	Correct	10 ms	9308 KB	Output is correct
42	Correct	10 ms	9308 KB	Output is correct
43	Correct	10 ms	9308 KB	Output is correct
44	Correct	9 ms	9308 KB	Output is correct

Subtask #3
56.0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	8568 KB	Output is correct
2	Correct	9 ms	8584 KB	Output is correct
3	Correct	8 ms	8640 KB	Output is correct
4	Correct	9 ms	8668 KB	Output is correct
5	Correct	9 ms	8672 KB	Output is correct
6	Correct	9 ms	8752 KB	Output is correct
7	Correct	9 ms	8760 KB	Output is correct
8	Correct	9 ms	8868 KB	Output is correct
9	Correct	9 ms	8880 KB	Output is correct
10	Correct	9 ms	8880 KB	Output is correct
11	Correct	9 ms	8880 KB	Output is correct
12	Correct	9 ms	8880 KB	Output is correct
13	Correct	9 ms	8880 KB	Output is correct
14	Correct	9 ms	8880 KB	Output is correct
15	Correct	9 ms	8880 KB	Output is correct
16	Correct	9 ms	8888 KB	Output is correct
17	Correct	9 ms	8888 KB	Output is correct
18	Correct	9 ms	8892 KB	Output is correct
19	Correct	9 ms	8896 KB	Output is correct
20	Correct	9 ms	8900 KB	Output is correct
21	Correct	8 ms	8904 KB	Output is correct
22	Correct	8 ms	8924 KB	Output is correct
23	Correct	9 ms	8924 KB	Output is correct
24	Correct	8 ms	8924 KB	Output is correct
25	Correct	13 ms	9048 KB	Output is correct
26	Correct	10 ms	9068 KB	Output is correct
27	Correct	11 ms	9068 KB	Output is correct
28	Correct	10 ms	9108 KB	Output is correct
29	Correct	10 ms	9108 KB	Output is correct
30	Correct	13 ms	9148 KB	Output is correct
31	Correct	13 ms	9152 KB	Output is correct
32	Correct	13 ms	9164 KB	Output is correct
33	Correct	10 ms	9208 KB	Output is correct
34	Correct	10 ms	9228 KB	Output is correct
35	Correct	9 ms	9228 KB	Output is correct
36	Correct	10 ms	9256 KB	Output is correct
37	Correct	10 ms	9256 KB	Output is correct
38	Correct	13 ms	9256 KB	Output is correct
39	Correct	9 ms	9256 KB	Output is correct
40	Correct	10 ms	9308 KB	Output is correct
41	Correct	10 ms	9308 KB	Output is correct
42	Correct	10 ms	9308 KB	Output is correct
43	Correct	10 ms	9308 KB	Output is correct
44	Correct	9 ms	9308 KB	Output is correct
45	Correct	81 ms	13492 KB	Output is correct
46	Correct	85 ms	13732 KB	Output is correct
47	Correct	88 ms	13788 KB	Output is correct
48	Correct	76 ms	13788 KB	Output is correct
49	Correct	74 ms	13792 KB	Output is correct
50	Correct	72 ms	13792 KB	Output is correct
51	Correct	74 ms	13792 KB	Output is correct
52	Correct	50 ms	13792 KB	Output is correct
53	Correct	91 ms	16864 KB	Output is correct
54	Correct	116 ms	17904 KB	Output is correct
55	Correct	103 ms	17904 KB	Output is correct
56	Correct	113 ms	17904 KB	Output is correct
57	Correct	58 ms	17904 KB	Output is correct
58	Correct	47 ms	17904 KB	Output is correct
59	Correct	71 ms	19176 KB	Output is correct
60	Correct	63 ms	20436 KB	Output is correct
61	Correct	72 ms	21976 KB	Output is correct
62	Correct	81 ms	23452 KB	Output is correct
63	Correct	62 ms	24472 KB	Output is correct
64	Correct	100 ms	25604 KB	Output is correct
65	Correct	117 ms	27760 KB	Output is correct
66	Correct	120 ms	29120 KB	Output is correct
67	Correct	95 ms	30824 KB	Output is correct
68	Correct	93 ms	31844 KB	Output is correct
69	Correct	92 ms	34128 KB	Output is correct
70	Correct	92 ms	35532 KB	Output is correct
71	Correct	103 ms	39360 KB	Output is correct
72	Correct	102 ms	40760 KB	Output is correct
73	Correct	101 ms	42148 KB	Output is correct
74	Correct	100 ms	43340 KB	Output is correct
75	Correct	56 ms	43340 KB	Output is correct
76	Correct	58 ms	43340 KB	Output is correct
77	Correct	57 ms	43340 KB	Output is correct
78	Correct	75 ms	44348 KB	Output is correct
79	Correct	76 ms	45496 KB	Output is correct

Subtask #4
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	8568 KB	Output is correct
2	Correct	9 ms	8584 KB	Output is correct
3	Correct	8 ms	8640 KB	Output is correct
4	Correct	9 ms	8668 KB	Output is correct
5	Correct	9 ms	8672 KB	Output is correct
6	Correct	9 ms	8752 KB	Output is correct
7	Correct	9 ms	8760 KB	Output is correct
8	Correct	9 ms	8868 KB	Output is correct
9	Correct	9 ms	8880 KB	Output is correct
10	Correct	9 ms	8880 KB	Output is correct
11	Correct	9 ms	8880 KB	Output is correct
12	Correct	9 ms	8880 KB	Output is correct
13	Correct	9 ms	8880 KB	Output is correct
14	Correct	9 ms	8880 KB	Output is correct
15	Correct	9 ms	8880 KB	Output is correct
16	Correct	9 ms	8888 KB	Output is correct
17	Correct	9 ms	8888 KB	Output is correct
18	Correct	9 ms	8892 KB	Output is correct
19	Correct	9 ms	8896 KB	Output is correct
20	Correct	9 ms	8900 KB	Output is correct
21	Correct	8 ms	8904 KB	Output is correct
22	Correct	8 ms	8924 KB	Output is correct
23	Correct	9 ms	8924 KB	Output is correct
24	Correct	8 ms	8924 KB	Output is correct
25	Correct	13 ms	9048 KB	Output is correct
26	Correct	10 ms	9068 KB	Output is correct
27	Correct	11 ms	9068 KB	Output is correct
28	Correct	10 ms	9108 KB	Output is correct
29	Correct	10 ms	9108 KB	Output is correct
30	Correct	13 ms	9148 KB	Output is correct
31	Correct	13 ms	9152 KB	Output is correct
32	Correct	13 ms	9164 KB	Output is correct
33	Correct	10 ms	9208 KB	Output is correct
34	Correct	10 ms	9228 KB	Output is correct
35	Correct	9 ms	9228 KB	Output is correct
36	Correct	10 ms	9256 KB	Output is correct
37	Correct	10 ms	9256 KB	Output is correct
38	Correct	13 ms	9256 KB	Output is correct
39	Correct	9 ms	9256 KB	Output is correct
40	Correct	10 ms	9308 KB	Output is correct
41	Correct	10 ms	9308 KB	Output is correct
42	Correct	10 ms	9308 KB	Output is correct
43	Correct	10 ms	9308 KB	Output is correct
44	Correct	9 ms	9308 KB	Output is correct
45	Correct	81 ms	13492 KB	Output is correct
46	Correct	85 ms	13732 KB	Output is correct
47	Correct	88 ms	13788 KB	Output is correct
48	Correct	76 ms	13788 KB	Output is correct
49	Correct	74 ms	13792 KB	Output is correct
50	Correct	72 ms	13792 KB	Output is correct
51	Correct	74 ms	13792 KB	Output is correct
52	Correct	50 ms	13792 KB	Output is correct
53	Correct	91 ms	16864 KB	Output is correct
54	Correct	116 ms	17904 KB	Output is correct
55	Correct	103 ms	17904 KB	Output is correct
56	Correct	113 ms	17904 KB	Output is correct
57	Correct	58 ms	17904 KB	Output is correct
58	Correct	47 ms	17904 KB	Output is correct
59	Correct	71 ms	19176 KB	Output is correct
60	Correct	63 ms	20436 KB	Output is correct
61	Correct	72 ms	21976 KB	Output is correct
62	Correct	81 ms	23452 KB	Output is correct
63	Correct	62 ms	24472 KB	Output is correct
64	Correct	100 ms	25604 KB	Output is correct
65	Correct	117 ms	27760 KB	Output is correct
66	Correct	120 ms	29120 KB	Output is correct
67	Correct	95 ms	30824 KB	Output is correct
68	Correct	93 ms	31844 KB	Output is correct
69	Correct	92 ms	34128 KB	Output is correct
70	Correct	92 ms	35532 KB	Output is correct
71	Correct	103 ms	39360 KB	Output is correct
72	Correct	102 ms	40760 KB	Output is correct
73	Correct	101 ms	42148 KB	Output is correct
74	Correct	100 ms	43340 KB	Output is correct
75	Correct	56 ms	43340 KB	Output is correct
76	Correct	58 ms	43340 KB	Output is correct
77	Correct	57 ms	43340 KB	Output is correct
78	Correct	75 ms	44348 KB	Output is correct
79	Correct	76 ms	45496 KB	Output is correct
80	Correct	852 ms	98988 KB	Output is correct
81	Correct	821 ms	113656 KB	Output is correct
82	Correct	829 ms	128180 KB	Output is correct
83	Correct	838 ms	142764 KB	Output is correct
84	Correct	867 ms	157376 KB	Output is correct
85	Correct	773 ms	171848 KB	Output is correct
86	Correct	793 ms	185688 KB	Output is correct
87	Correct	414 ms	185688 KB	Output is correct
88	Correct	1075 ms	242900 KB	Output is correct
89	Correct	1343 ms	264804 KB	Output is correct
90	Correct	1127 ms	264804 KB	Output is correct
91	Correct	1154 ms	264804 KB	Output is correct
92	Correct	519 ms	264804 KB	Output is correct
93	Correct	433 ms	264804 KB	Output is correct
94	Correct	670 ms	285476 KB	Output is correct
95	Correct	750 ms	300284 KB	Output is correct
96	Correct	810 ms	312848 KB	Output is correct
97	Correct	670 ms	327572 KB	Output is correct
98	Correct	723 ms	340572 KB	Output is correct
99	Correct	737 ms	354844 KB	Output is correct
100	Correct	2305 ms	374456 KB	Output is correct
101	Correct	2446 ms	388348 KB	Output is correct
102	Correct	1232 ms	403660 KB	Output is correct
103	Correct	1234 ms	417952 KB	Output is correct
104	Correct	1173 ms	441536 KB	Output is correct
105	Correct	1194 ms	455844 KB	Output is correct
106	Correct	1271 ms	488160 KB	Output is correct
107	Correct	1316 ms	502564 KB	Output is correct
108	Correct	1288 ms	513656 KB	Output is correct
109	Correct	1290 ms	529660 KB	Output is correct
110	Correct	588 ms	529660 KB	Output is correct
111	Correct	689 ms	529660 KB	Output is correct
112	Correct	630 ms	529660 KB	Output is correct
113	Correct	892 ms	548164 KB	Output is correct
114	Correct	891 ms	560692 KB	Output is correct

Submission #77736

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