Submission #953455

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
953455	2024-03-26T01:48:57 Z	pcc	Port Facility (JOI17_port_facility)	C++17	10 / 100	28 ms	17492 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 = 2024;

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;
}

pii arr[mxn];
int N;
int C = 0;
vector<int> paths[mxn];
int col[mxn];

bool dfs(int now,int c = 1){
	bool flag = true;
	col[now] = c;
	for(auto nxt:paths[now]){
		if(!col[nxt])flag = flag&&dfs(nxt,-c);
		else if(col[nxt] != -c)flag = false;
	}
	return flag;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N;
	for(int i = 1;i<=N;i++)cin>>arr[i].fs>>arr[i].sc;
	for(int i = 1;i<=N;i++){
		for(int j = i+1;j<=N;j++){
			auto ta = arr[i],tb = arr[j];
			if(ta.fs>tb.fs)swap(ta,tb);
			if(ta.sc<tb.sc&&ta.sc>tb.fs){
				paths[i].push_back(j);
				paths[j].push_back(i);
				C++;
			}
		}
	}
	ll ans = 1;
	for(int i = 1;i<=N;i++){
		if(!col[i]){
			if(dfs(i)){
				ans = mad(ans,ans);
			}
			else ans = 0;
		}
	}
	if(ans)assert(C<=1e5);
	cout<<ans;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	344 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct

Subtask #2
0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	344 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	11 ms	600 KB	Output is correct
26	Correct	13 ms	860 KB	Output is correct
27	Correct	11 ms	860 KB	Output is correct
28	Correct	12 ms	940 KB	Output is correct
29	Correct	11 ms	856 KB	Output is correct
30	Correct	11 ms	1112 KB	Output is correct
31	Correct	11 ms	860 KB	Output is correct
32	Correct	11 ms	860 KB	Output is correct
33	Correct	11 ms	604 KB	Output is correct
34	Correct	11 ms	604 KB	Output is correct
35	Correct	8 ms	348 KB	Output is correct
36	Correct	9 ms	344 KB	Output is correct
37	Correct	27 ms	16476 KB	Output is correct
38	Correct	20 ms	8540 KB	Output is correct
39	Correct	8 ms	348 KB	Output is correct
40	Correct	8 ms	348 KB	Output is correct
41	Runtime error	28 ms	17492 KB	Execution killed with signal 6
42	Halted	0 ms	0 KB	-

Subtask #3
0 / 56.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	344 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	11 ms	600 KB	Output is correct
26	Correct	13 ms	860 KB	Output is correct
27	Correct	11 ms	860 KB	Output is correct
28	Correct	12 ms	940 KB	Output is correct
29	Correct	11 ms	856 KB	Output is correct
30	Correct	11 ms	1112 KB	Output is correct
31	Correct	11 ms	860 KB	Output is correct
32	Correct	11 ms	860 KB	Output is correct
33	Correct	11 ms	604 KB	Output is correct
34	Correct	11 ms	604 KB	Output is correct
35	Correct	8 ms	348 KB	Output is correct
36	Correct	9 ms	344 KB	Output is correct
37	Correct	27 ms	16476 KB	Output is correct
38	Correct	20 ms	8540 KB	Output is correct
39	Correct	8 ms	348 KB	Output is correct
40	Correct	8 ms	348 KB	Output is correct
41	Runtime error	28 ms	17492 KB	Execution killed with signal 6
42	Halted	0 ms	0 KB	-

Subtask #4
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	344 KB	Output is correct
8	Correct	0 ms	344 KB	Output is correct
9	Correct	0 ms	344 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	348 KB	Output is correct
23	Correct	0 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	11 ms	600 KB	Output is correct
26	Correct	13 ms	860 KB	Output is correct
27	Correct	11 ms	860 KB	Output is correct
28	Correct	12 ms	940 KB	Output is correct
29	Correct	11 ms	856 KB	Output is correct
30	Correct	11 ms	1112 KB	Output is correct
31	Correct	11 ms	860 KB	Output is correct
32	Correct	11 ms	860 KB	Output is correct
33	Correct	11 ms	604 KB	Output is correct
34	Correct	11 ms	604 KB	Output is correct
35	Correct	8 ms	348 KB	Output is correct
36	Correct	9 ms	344 KB	Output is correct
37	Correct	27 ms	16476 KB	Output is correct
38	Correct	20 ms	8540 KB	Output is correct
39	Correct	8 ms	348 KB	Output is correct
40	Correct	8 ms	348 KB	Output is correct
41	Runtime error	28 ms	17492 KB	Execution killed with signal 6
42	Halted	0 ms	0 KB	-

Submission #953455

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 0 / 12.0

Subtask #3 0 / 56.0

Subtask #4 0 / 22.0

Subtask #1
10.0 / 10.0

Subtask #2
0 / 12.0

Subtask #3
0 / 56.0

Subtask #4
0 / 22.0