Submission #1033121

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1033121	2024-07-24T13:03:50 Z	vjudge1	Joker (BOI20_joker)	C++17	6 / 100	22 ms	5972 KB

Joker

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

#define int long long
#define ll long long
#define ar array
#define ld long double

const int N = 3e5 + 20;
const int K = 200;
const int INF = 1e15;
const int LOG = 24;
const int MOD = 998244353;

struct DSU{
	vector<int> p;
	vector<int> c;
	vector<int> sz;
	vector<int> bi;
	
	DSU(int n){
		p.clear();
		sz.clear();
		bi.clear();
		c.clear();
		p.resize(n);
		sz.resize(n, 1);
		bi.resize(n, 1);
		c.resize(n, 0);
		for(int i = 0;i < n;i++)p[i] = i;
	}
	
	ar<int,2 > find(int x){
		if(x == p[x])return {x, c[x]};
		ar<int,2 > q = find(p[x]);
		return {q[0], q[1] ^ c[x]};
	}
	
	vector<pair<int&, int> > rb;
	
	bool join(int a,int b){
		ar<int, 2> pa = find(a);
		ar<int, 2> pb = find(b);
		a = pa[0];
		b = pb[0];
		int ca = pa[1];
		int cb = pb[1];
		
		rb.push_back({p[a], p[a]});
		rb.push_back({sz[a], sz[a]});
		rb.push_back({bi[a], bi[a]});
		rb.push_back({c[a], c[a]});
		
		rb.push_back({p[b], p[b]});
		rb.push_back({sz[b], sz[b]});
		rb.push_back({bi[b], bi[b]});
		rb.push_back({c[b], c[b]});
		
		if(a == b){
			if(ca == cb)bi[a] = 0;
			return 0;
		}
		
		if(sz[a] < sz[b])swap(a, b), swap(ca, cb);
		sz[a] += sz[b];
		p[b] = a;
		c[b] = cb ^ ca ^ 1;
		bi[a] &= bi[b];
		return 1;
	}
	inline bool bip(int x){
		return bi[find(x)[0]];
	}
	
	void roll(){
		for(int i = 0;i < 8;i++){
			rb.back().first = rb.back().second;
			rb.pop_back();
		}
	}
};

signed main(){ios_base::sync_with_stdio(false);cin.tie(0);
	int n, m, q;
	cin>>n>>m>>q;
	ar<int, 2> e[m];
	for(int i = 0;i < m;i++){
		int u, v;
		cin>>u>>v;
		--u, --v;
		e[i] = {u, v};
	}
	//assert(0);
	if(n <= 1000 && m <= 1000 && q <= 1000){
		while(q--){
			int l, r;
			cin>>l>>r;
			--l, --r;
			DSU d(n);
			bool ans = 1;
			for(int i = 0;i < m;i++){
				if(l <= i && i <= r)continue;
				d.join(e[i][0], e[i][1]);
				if(!d.bip(e[i][0])){
					ans = 0;
					break;
				}
			}
			cout<< (ans ? "NO\n" : "YES\n");
		}
		return 0;
	}
	
	
}

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	600 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	2 ms	348 KB	Output is correct
8	Correct	2 ms	520 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	2 ms	452 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	2 ms	460 KB	Output is correct
13	Correct	2 ms	344 KB	Output is correct
14	Correct	4 ms	344 KB	Output is correct
15	Correct	3 ms	348 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	2 ms	348 KB	Output is correct
18	Correct	2 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	360 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	2 ms	348 KB	Output is correct
25	Correct	2 ms	348 KB	Output is correct
26	Correct	1 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	2 ms	452 KB	Output is correct

Subtask #2
0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	600 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	2 ms	348 KB	Output is correct
8	Correct	2 ms	520 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	2 ms	452 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	2 ms	460 KB	Output is correct
13	Correct	2 ms	344 KB	Output is correct
14	Correct	4 ms	344 KB	Output is correct
15	Correct	3 ms	348 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	2 ms	348 KB	Output is correct
18	Correct	2 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	360 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	2 ms	348 KB	Output is correct
25	Correct	2 ms	348 KB	Output is correct
26	Correct	1 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	2 ms	452 KB	Output is correct
29	Incorrect	1 ms	348 KB	Output isn't correct
30	Halted	0 ms	0 KB	-

Subtask #3
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Incorrect	22 ms	5972 KB	Output isn't correct
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	600 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	2 ms	348 KB	Output is correct
8	Correct	2 ms	520 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	2 ms	452 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	2 ms	460 KB	Output is correct
13	Correct	2 ms	344 KB	Output is correct
14	Correct	4 ms	344 KB	Output is correct
15	Correct	3 ms	348 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	2 ms	348 KB	Output is correct
18	Correct	2 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	360 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	2 ms	348 KB	Output is correct
25	Correct	2 ms	348 KB	Output is correct
26	Correct	1 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	2 ms	452 KB	Output is correct
29	Incorrect	22 ms	5972 KB	Output isn't correct
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	600 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	2 ms	348 KB	Output is correct
8	Correct	2 ms	520 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	2 ms	452 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	2 ms	460 KB	Output is correct
13	Correct	2 ms	344 KB	Output is correct
14	Correct	4 ms	344 KB	Output is correct
15	Correct	3 ms	348 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	2 ms	348 KB	Output is correct
18	Correct	2 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	360 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	2 ms	348 KB	Output is correct
25	Correct	2 ms	348 KB	Output is correct
26	Correct	1 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	2 ms	452 KB	Output is correct
29	Incorrect	1 ms	348 KB	Output isn't correct
30	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	600 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	2 ms	348 KB	Output is correct
8	Correct	2 ms	520 KB	Output is correct
9	Correct	2 ms	348 KB	Output is correct
10	Correct	2 ms	452 KB	Output is correct
11	Correct	2 ms	348 KB	Output is correct
12	Correct	2 ms	460 KB	Output is correct
13	Correct	2 ms	344 KB	Output is correct
14	Correct	4 ms	344 KB	Output is correct
15	Correct	3 ms	348 KB	Output is correct
16	Correct	2 ms	348 KB	Output is correct
17	Correct	2 ms	348 KB	Output is correct
18	Correct	2 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	2 ms	348 KB	Output is correct
21	Correct	2 ms	360 KB	Output is correct
22	Correct	2 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	2 ms	348 KB	Output is correct
25	Correct	2 ms	348 KB	Output is correct
26	Correct	1 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	2 ms	452 KB	Output is correct
29	Incorrect	1 ms	348 KB	Output isn't correct
30	Halted	0 ms	0 KB	-

Submission #1033121

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 0 / 8.0

Subtask #3 0 / 25.0

Subtask #4 0 / 10.0

Subtask #5 0 / 22.0

Subtask #6 0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
0 / 8.0

Subtask #3
0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
0 / 22.0

Subtask #6
0 / 29.0