Submission #31098

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
31098	2017-08-09T21:41:49 Z	RezwanArefin01	Port Facility (JOI17_port_facility)	C++14	22 / 100	6000 ms	53280 KB

port_facility

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

const int maxn = 1e6 + 10;
vector<int> adj[maxn]; 
int col[maxn], n; 

struct range{
	int l, r; 
	bool operator < (const range &p) const {
		return l == p.l ? r < p.r : l < p.l;
	}
} v[maxn];

bool cant(int i, int j) {
	return (v[i].l < v[j].l && v[j].l < v[i].r && v[j].r > v[i].r);
}

bool bfs(int r) {
	col[r] = 0; 
	queue<int> Q;
	Q.push(r); 
	while(!Q.empty()) {
		int u = Q.front(); Q.pop(); 
		for(int v : adj[u]) {
			if(col[v] == -1) {
				col[v] = col[u] ^ 1; 
				Q.push(v);
			} else if(col[v] == col[u]) return 0;
		}
	} return 1; 
}
void construct() {
	sort(v, v+n);
	range q[n]; 
	for(int i = 0; i < n; i++) {
		q[i] = {v[i].l, i}; 
	}
	for(int i = 0; i < n; i++) {
		range xx = {v[i].r, 0}; 
		int x = lower_bound(v, v+n, v[i]) - v; 
		int y = upper_bound(v, v+n, xx) - v;
		for(int j = x; j <= y; j++) {
			if(cant(i, j) || cant(j, i)) {
				adj[i].push_back(j);
				adj[j].push_back(i); 
				//cout << i << " " << v[j].r << endl;
			}
		}	
	}
}
int main(int argc, char const *argv[]) {
#ifdef LOCAL_TESTING
	freopen("in", "r", stdin);
#endif
	cin >> n; 
	for(int i = 0; i < n; i++) 
		cin >> v[i].l >> v[i].r; 

	construct(); 
	int comp = 0;
	memset(col, -1, sizeof col);
	for(int i = 0; i < n; i++) {
		if(col[i] == -1) {
			comp++;
			if(!bfs(i)) return cout << 0 << endl, 0; 
			//for(int j=0; j < n; j++) cout << col[i] <<" "; cout << endl;
		}
	}
	int ans = 1; 
	for(int i = 0; i < comp; i++) {
		ans = (ans * 2) % ll(1e9 + 7); 
	} cout << ans << endl;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	37180 KB	Output is correct
2	Correct	6 ms	37180 KB	Output is correct
3	Correct	3 ms	37180 KB	Output is correct
4	Correct	6 ms	37180 KB	Output is correct
5	Correct	6 ms	37180 KB	Output is correct
6	Correct	6 ms	37180 KB	Output is correct
7	Correct	9 ms	37180 KB	Output is correct
8	Correct	6 ms	37180 KB	Output is correct
9	Correct	9 ms	37180 KB	Output is correct
10	Correct	6 ms	37180 KB	Output is correct
11	Correct	6 ms	37180 KB	Output is correct
12	Correct	6 ms	37180 KB	Output is correct
13	Correct	3 ms	37180 KB	Output is correct
14	Correct	9 ms	37180 KB	Output is correct
15	Correct	6 ms	37180 KB	Output is correct
16	Correct	6 ms	37180 KB	Output is correct
17	Correct	3 ms	37180 KB	Output is correct
18	Correct	3 ms	37180 KB	Output is correct
19	Correct	3 ms	37180 KB	Output is correct
20	Correct	6 ms	37180 KB	Output is correct
21	Correct	9 ms	37180 KB	Output is correct
22	Correct	9 ms	37180 KB	Output is correct
23	Correct	6 ms	37180 KB	Output is correct
24	Correct	13 ms	37180 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	37180 KB	Output is correct
2	Correct	6 ms	37180 KB	Output is correct
3	Correct	3 ms	37180 KB	Output is correct
4	Correct	6 ms	37180 KB	Output is correct
5	Correct	6 ms	37180 KB	Output is correct
6	Correct	6 ms	37180 KB	Output is correct
7	Correct	9 ms	37180 KB	Output is correct
8	Correct	6 ms	37180 KB	Output is correct
9	Correct	9 ms	37180 KB	Output is correct
10	Correct	6 ms	37180 KB	Output is correct
11	Correct	6 ms	37180 KB	Output is correct
12	Correct	6 ms	37180 KB	Output is correct
13	Correct	3 ms	37180 KB	Output is correct
14	Correct	9 ms	37180 KB	Output is correct
15	Correct	6 ms	37180 KB	Output is correct
16	Correct	6 ms	37180 KB	Output is correct
17	Correct	3 ms	37180 KB	Output is correct
18	Correct	3 ms	37180 KB	Output is correct
19	Correct	3 ms	37180 KB	Output is correct
20	Correct	6 ms	37180 KB	Output is correct
21	Correct	9 ms	37180 KB	Output is correct
22	Correct	9 ms	37180 KB	Output is correct
23	Correct	6 ms	37180 KB	Output is correct
24	Correct	13 ms	37180 KB	Output is correct
25	Correct	13 ms	37444 KB	Output is correct
26	Correct	13 ms	37576 KB	Output is correct
27	Correct	19 ms	37444 KB	Output is correct
28	Correct	6 ms	37708 KB	Output is correct
29	Correct	13 ms	37576 KB	Output is correct
30	Correct	13 ms	37576 KB	Output is correct
31	Correct	13 ms	37444 KB	Output is correct
32	Correct	13 ms	37444 KB	Output is correct
33	Correct	13 ms	37444 KB	Output is correct
34	Correct	9 ms	37444 KB	Output is correct
35	Correct	6 ms	37180 KB	Output is correct
36	Correct	9 ms	37180 KB	Output is correct
37	Correct	53 ms	53280 KB	Output is correct
38	Correct	16 ms	45364 KB	Output is correct
39	Correct	6 ms	37312 KB	Output is correct
40	Correct	3 ms	37180 KB	Output is correct
41	Correct	46 ms	45232 KB	Output is correct
42	Correct	29 ms	45232 KB	Output is correct
43	Correct	6 ms	37312 KB	Output is correct
44	Correct	16 ms	37312 KB	Output is correct

Subtask #3
0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	37180 KB	Output is correct
2	Correct	6 ms	37180 KB	Output is correct
3	Correct	3 ms	37180 KB	Output is correct
4	Correct	6 ms	37180 KB	Output is correct
5	Correct	6 ms	37180 KB	Output is correct
6	Correct	6 ms	37180 KB	Output is correct
7	Correct	9 ms	37180 KB	Output is correct
8	Correct	6 ms	37180 KB	Output is correct
9	Correct	9 ms	37180 KB	Output is correct
10	Correct	6 ms	37180 KB	Output is correct
11	Correct	6 ms	37180 KB	Output is correct
12	Correct	6 ms	37180 KB	Output is correct
13	Correct	3 ms	37180 KB	Output is correct
14	Correct	9 ms	37180 KB	Output is correct
15	Correct	6 ms	37180 KB	Output is correct
16	Correct	6 ms	37180 KB	Output is correct
17	Correct	3 ms	37180 KB	Output is correct
18	Correct	3 ms	37180 KB	Output is correct
19	Correct	3 ms	37180 KB	Output is correct
20	Correct	6 ms	37180 KB	Output is correct
21	Correct	9 ms	37180 KB	Output is correct
22	Correct	9 ms	37180 KB	Output is correct
23	Correct	6 ms	37180 KB	Output is correct
24	Correct	13 ms	37180 KB	Output is correct
25	Correct	13 ms	37444 KB	Output is correct
26	Correct	13 ms	37576 KB	Output is correct
27	Correct	19 ms	37444 KB	Output is correct
28	Correct	6 ms	37708 KB	Output is correct
29	Correct	13 ms	37576 KB	Output is correct
30	Correct	13 ms	37576 KB	Output is correct
31	Correct	13 ms	37444 KB	Output is correct
32	Correct	13 ms	37444 KB	Output is correct
33	Correct	13 ms	37444 KB	Output is correct
34	Correct	9 ms	37444 KB	Output is correct
35	Correct	6 ms	37180 KB	Output is correct
36	Correct	9 ms	37180 KB	Output is correct
37	Correct	53 ms	53280 KB	Output is correct
38	Correct	16 ms	45364 KB	Output is correct
39	Correct	6 ms	37312 KB	Output is correct
40	Correct	3 ms	37180 KB	Output is correct
41	Correct	46 ms	45232 KB	Output is correct
42	Correct	29 ms	45232 KB	Output is correct
43	Correct	6 ms	37312 KB	Output is correct
44	Correct	16 ms	37312 KB	Output is correct
45	Execution timed out	6000 ms	52616 KB	Execution timed out
46	Halted	0 ms	0 KB	-

Subtask #4
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	37180 KB	Output is correct
2	Correct	6 ms	37180 KB	Output is correct
3	Correct	3 ms	37180 KB	Output is correct
4	Correct	6 ms	37180 KB	Output is correct
5	Correct	6 ms	37180 KB	Output is correct
6	Correct	6 ms	37180 KB	Output is correct
7	Correct	9 ms	37180 KB	Output is correct
8	Correct	6 ms	37180 KB	Output is correct
9	Correct	9 ms	37180 KB	Output is correct
10	Correct	6 ms	37180 KB	Output is correct
11	Correct	6 ms	37180 KB	Output is correct
12	Correct	6 ms	37180 KB	Output is correct
13	Correct	3 ms	37180 KB	Output is correct
14	Correct	9 ms	37180 KB	Output is correct
15	Correct	6 ms	37180 KB	Output is correct
16	Correct	6 ms	37180 KB	Output is correct
17	Correct	3 ms	37180 KB	Output is correct
18	Correct	3 ms	37180 KB	Output is correct
19	Correct	3 ms	37180 KB	Output is correct
20	Correct	6 ms	37180 KB	Output is correct
21	Correct	9 ms	37180 KB	Output is correct
22	Correct	9 ms	37180 KB	Output is correct
23	Correct	6 ms	37180 KB	Output is correct
24	Correct	13 ms	37180 KB	Output is correct
25	Correct	13 ms	37444 KB	Output is correct
26	Correct	13 ms	37576 KB	Output is correct
27	Correct	19 ms	37444 KB	Output is correct
28	Correct	6 ms	37708 KB	Output is correct
29	Correct	13 ms	37576 KB	Output is correct
30	Correct	13 ms	37576 KB	Output is correct
31	Correct	13 ms	37444 KB	Output is correct
32	Correct	13 ms	37444 KB	Output is correct
33	Correct	13 ms	37444 KB	Output is correct
34	Correct	9 ms	37444 KB	Output is correct
35	Correct	6 ms	37180 KB	Output is correct
36	Correct	9 ms	37180 KB	Output is correct
37	Correct	53 ms	53280 KB	Output is correct
38	Correct	16 ms	45364 KB	Output is correct
39	Correct	6 ms	37312 KB	Output is correct
40	Correct	3 ms	37180 KB	Output is correct
41	Correct	46 ms	45232 KB	Output is correct
42	Correct	29 ms	45232 KB	Output is correct
43	Correct	6 ms	37312 KB	Output is correct
44	Correct	16 ms	37312 KB	Output is correct
45	Execution timed out	6000 ms	52616 KB	Execution timed out
46	Halted	0 ms	0 KB	-

Submission #31098

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 12.0 / 12.0

Subtask #3 0 / 56.0

Subtask #4 0 / 22.0

Subtask #1
10.0 / 10.0

Subtask #2
12.0 / 12.0

Subtask #3
0 / 56.0

Subtask #4
0 / 22.0