답안 #877258

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
877258	2023-11-23T05:02:37 Z	socpite	Joker (BOI20_joker)	C++14	14 / 100	2000 ms	10960 KB

Joker

#include <bits/stdc++.h>
using namespace std;
 
const int maxn = 5e5 + 5;
 
int up[maxn], par[maxn];
 
int n, m, q;
 
int Find(int x){
    if(!up[x])return x;
    else{
        int tmp = up[x];
        up[x] = Find(tmp);
        par[x]^=par[tmp];
        return up[x];
    }
}
 
bool bad = 0;
 
vector<int> undo;
 
void Union(int a, int b){
    undo.push_back(a);
    undo.push_back(b);
    int ra = Find(a), rb = Find(b);
    if(ra == rb){
        // cout << ra << endl;
        // cout << par[a] << " " << par[b] << endl;
        if(par[a] == par[b])bad = 1;
    }
    else{
        up[rb]= ra;
        par[rb]=par[a]^par[b]^1;
    }
}
 
void rs() {
    bad = 0;
    for(auto v: undo)up[v] = par[v] = 0;
    undo.clear();
}
 
int U[maxn], V[maxn];
int bound[maxn];
 
void dnc(int l, int r, int ql, int qr) {
    if(l > r)return;
    int mid = (l+r)>>1;
    // cout << mid << " " << ql << " " << qr << endl;
    rs();
    int ans = qr;
    if(ql > mid){
        for(int i = mid; i < ql; i++)Union(U[i], V[i]);
    }
    for(int i = max(mid, ql); i < qr; i++){
        Union(U[i], V[i]);
        if(bad){
            ans = i;
            break;
        }
    }
    // cout << ans << endl;
    bound[mid] = ans;
    dnc(l, mid-1, ql, ans);
    dnc(mid+1, r, ans, qr);
}
 
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> m >> q;
    for(int i = 1; i <= m; i++)cin >> U[i] >> V[i];
    for(int i = m+1; i <= 2*m; i++){
        U[i] = U[i-m];
        V[i] = V[i-m];
    }
    dnc(1, 2*m, 1, 2*m+1);
    // for(int i = 1; i <= 2*m; i++)cout << i << " " << bound[i] << endl;
    while(q--){
        int l, r;
        cin >> l >> r;
        if(l + m - 1 >= bound[r+1])cout << "YES";
        else cout << "NO";
        cout << "\n";
    }
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	6492 KB	Output is correct
2	Correct	1 ms	6492 KB	Output is correct
3	Correct	1 ms	6492 KB	Output is correct
4	Correct	1 ms	6492 KB	Output is correct
5	Correct	1 ms	6492 KB	Output is correct
6	Correct	1 ms	6492 KB	Output is correct
7	Correct	1 ms	6492 KB	Output is correct
8	Correct	1 ms	6624 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	1 ms	6488 KB	Output is correct
11	Correct	1 ms	6492 KB	Output is correct
12	Correct	1 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	1 ms	6492 KB	Output is correct
17	Correct	1 ms	6492 KB	Output is correct
18	Correct	1 ms	6492 KB	Output is correct
19	Correct	1 ms	6636 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	1 ms	6492 KB	Output is correct
22	Correct	1 ms	6492 KB	Output is correct
23	Correct	1 ms	6492 KB	Output is correct
24	Correct	1 ms	6492 KB	Output is correct
25	Correct	1 ms	6488 KB	Output is correct
26	Correct	2 ms	6488 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	6492 KB	Output is correct
2	Correct	1 ms	6492 KB	Output is correct
3	Correct	1 ms	6492 KB	Output is correct
4	Correct	1 ms	6492 KB	Output is correct
5	Correct	1 ms	6492 KB	Output is correct
6	Correct	1 ms	6492 KB	Output is correct
7	Correct	1 ms	6492 KB	Output is correct
8	Correct	1 ms	6624 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	1 ms	6488 KB	Output is correct
11	Correct	1 ms	6492 KB	Output is correct
12	Correct	1 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	1 ms	6492 KB	Output is correct
17	Correct	1 ms	6492 KB	Output is correct
18	Correct	1 ms	6492 KB	Output is correct
19	Correct	1 ms	6636 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	1 ms	6492 KB	Output is correct
22	Correct	1 ms	6492 KB	Output is correct
23	Correct	1 ms	6492 KB	Output is correct
24	Correct	1 ms	6492 KB	Output is correct
25	Correct	1 ms	6488 KB	Output is correct
26	Correct	2 ms	6488 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	17 ms	6492 KB	Output is correct
30	Correct	25 ms	6492 KB	Output is correct
31	Correct	25 ms	6492 KB	Output is correct
32	Correct	16 ms	6492 KB	Output is correct
33	Correct	10 ms	6688 KB	Output is correct
34	Correct	28 ms	6576 KB	Output is correct
35	Correct	28 ms	6492 KB	Output is correct
36	Correct	26 ms	6492 KB	Output is correct
37	Correct	43 ms	6700 KB	Output is correct
38	Correct	97 ms	6728 KB	Output is correct
39	Correct	37 ms	6704 KB	Output is correct
40	Correct	21 ms	6748 KB	Output is correct
41	Correct	22 ms	6492 KB	Output is correct
42	Correct	20 ms	6488 KB	Output is correct
43	Correct	28 ms	6492 KB	Output is correct
44	Correct	26 ms	6692 KB	Output is correct
45	Correct	23 ms	6492 KB	Output is correct
46	Correct	29 ms	6492 KB	Output is correct
47	Correct	26 ms	6492 KB	Output is correct
48	Correct	26 ms	6488 KB	Output is correct
49	Correct	26 ms	6488 KB	Output is correct
50	Correct	29 ms	6708 KB	Output is correct
51	Correct	28 ms	6492 KB	Output is correct
52	Correct	30 ms	6492 KB	Output is correct
53	Correct	26 ms	6704 KB	Output is correct
54	Correct	33 ms	6704 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	6492 KB	Output is correct
2	Correct	1 ms	6492 KB	Output is correct
3	Execution timed out	2058 ms	8656 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	6492 KB	Output is correct
2	Correct	1 ms	6492 KB	Output is correct
3	Correct	1 ms	6492 KB	Output is correct
4	Correct	1 ms	6492 KB	Output is correct
5	Correct	1 ms	6492 KB	Output is correct
6	Correct	1 ms	6492 KB	Output is correct
7	Correct	1 ms	6492 KB	Output is correct
8	Correct	1 ms	6624 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	1 ms	6488 KB	Output is correct
11	Correct	1 ms	6492 KB	Output is correct
12	Correct	1 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	1 ms	6492 KB	Output is correct
17	Correct	1 ms	6492 KB	Output is correct
18	Correct	1 ms	6492 KB	Output is correct
19	Correct	1 ms	6636 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	1 ms	6492 KB	Output is correct
22	Correct	1 ms	6492 KB	Output is correct
23	Correct	1 ms	6492 KB	Output is correct
24	Correct	1 ms	6492 KB	Output is correct
25	Correct	1 ms	6488 KB	Output is correct
26	Correct	2 ms	6488 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Execution timed out	2058 ms	8656 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	6492 KB	Output is correct
2	Correct	1 ms	6492 KB	Output is correct
3	Correct	1 ms	6492 KB	Output is correct
4	Correct	1 ms	6492 KB	Output is correct
5	Correct	1 ms	6492 KB	Output is correct
6	Correct	1 ms	6492 KB	Output is correct
7	Correct	1 ms	6492 KB	Output is correct
8	Correct	1 ms	6624 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	1 ms	6488 KB	Output is correct
11	Correct	1 ms	6492 KB	Output is correct
12	Correct	1 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	1 ms	6492 KB	Output is correct
17	Correct	1 ms	6492 KB	Output is correct
18	Correct	1 ms	6492 KB	Output is correct
19	Correct	1 ms	6636 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	1 ms	6492 KB	Output is correct
22	Correct	1 ms	6492 KB	Output is correct
23	Correct	1 ms	6492 KB	Output is correct
24	Correct	1 ms	6492 KB	Output is correct
25	Correct	1 ms	6488 KB	Output is correct
26	Correct	2 ms	6488 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	17 ms	6492 KB	Output is correct
30	Correct	25 ms	6492 KB	Output is correct
31	Correct	25 ms	6492 KB	Output is correct
32	Correct	16 ms	6492 KB	Output is correct
33	Correct	10 ms	6688 KB	Output is correct
34	Correct	28 ms	6576 KB	Output is correct
35	Correct	28 ms	6492 KB	Output is correct
36	Correct	26 ms	6492 KB	Output is correct
37	Correct	43 ms	6700 KB	Output is correct
38	Correct	97 ms	6728 KB	Output is correct
39	Correct	37 ms	6704 KB	Output is correct
40	Correct	21 ms	6748 KB	Output is correct
41	Correct	22 ms	6492 KB	Output is correct
42	Correct	20 ms	6488 KB	Output is correct
43	Correct	28 ms	6492 KB	Output is correct
44	Correct	26 ms	6692 KB	Output is correct
45	Correct	23 ms	6492 KB	Output is correct
46	Correct	29 ms	6492 KB	Output is correct
47	Correct	26 ms	6492 KB	Output is correct
48	Correct	26 ms	6488 KB	Output is correct
49	Correct	26 ms	6488 KB	Output is correct
50	Correct	29 ms	6708 KB	Output is correct
51	Correct	28 ms	6492 KB	Output is correct
52	Correct	30 ms	6492 KB	Output is correct
53	Correct	26 ms	6704 KB	Output is correct
54	Correct	33 ms	6704 KB	Output is correct
55	Execution timed out	2040 ms	10960 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	6492 KB	Output is correct
2	Correct	1 ms	6492 KB	Output is correct
3	Correct	1 ms	6492 KB	Output is correct
4	Correct	1 ms	6492 KB	Output is correct
5	Correct	1 ms	6492 KB	Output is correct
6	Correct	1 ms	6492 KB	Output is correct
7	Correct	1 ms	6492 KB	Output is correct
8	Correct	1 ms	6624 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	1 ms	6488 KB	Output is correct
11	Correct	1 ms	6492 KB	Output is correct
12	Correct	1 ms	6492 KB	Output is correct
13	Correct	2 ms	6492 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	1 ms	6492 KB	Output is correct
17	Correct	1 ms	6492 KB	Output is correct
18	Correct	1 ms	6492 KB	Output is correct
19	Correct	1 ms	6636 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	1 ms	6492 KB	Output is correct
22	Correct	1 ms	6492 KB	Output is correct
23	Correct	1 ms	6492 KB	Output is correct
24	Correct	1 ms	6492 KB	Output is correct
25	Correct	1 ms	6488 KB	Output is correct
26	Correct	2 ms	6488 KB	Output is correct
27	Correct	2 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	17 ms	6492 KB	Output is correct
30	Correct	25 ms	6492 KB	Output is correct
31	Correct	25 ms	6492 KB	Output is correct
32	Correct	16 ms	6492 KB	Output is correct
33	Correct	10 ms	6688 KB	Output is correct
34	Correct	28 ms	6576 KB	Output is correct
35	Correct	28 ms	6492 KB	Output is correct
36	Correct	26 ms	6492 KB	Output is correct
37	Correct	43 ms	6700 KB	Output is correct
38	Correct	97 ms	6728 KB	Output is correct
39	Correct	37 ms	6704 KB	Output is correct
40	Correct	21 ms	6748 KB	Output is correct
41	Correct	22 ms	6492 KB	Output is correct
42	Correct	20 ms	6488 KB	Output is correct
43	Correct	28 ms	6492 KB	Output is correct
44	Correct	26 ms	6692 KB	Output is correct
45	Correct	23 ms	6492 KB	Output is correct
46	Correct	29 ms	6492 KB	Output is correct
47	Correct	26 ms	6492 KB	Output is correct
48	Correct	26 ms	6488 KB	Output is correct
49	Correct	26 ms	6488 KB	Output is correct
50	Correct	29 ms	6708 KB	Output is correct
51	Correct	28 ms	6492 KB	Output is correct
52	Correct	30 ms	6492 KB	Output is correct
53	Correct	26 ms	6704 KB	Output is correct
54	Correct	33 ms	6704 KB	Output is correct
55	Execution timed out	2058 ms	8656 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

답안 #877258

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 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
8.0 / 8.0

Subtask #3
0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
0 / 22.0

Subtask #6
0 / 29.0