답안 #1050417

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1050417	2024-08-09T09:16:32 Z	duckindog	Joker (BOI20_joker)	C++17	39 / 100	168 ms	18000 KB

Joker

#include <bits/stdc++.h>

using namespace std;

const int N = 200'000 + 10;
int n, m, q;
vector<pair<int, int>> ad[N];
int co[N];

int32_t main() { 
  cin.tie(0)->sync_with_stdio(0);

  cin >> n >> m >> q;
  for (int i = 1; i <= m; ++i) { 
    int u, v; cin >> u >> v;
    ad[u].push_back({v, i});
    ad[v].push_back({u, i});
  }

  auto color = [&](int st, int l, int r) { 
    bool ret = false;
    co[st] = 1;
    queue<int> q({st});
    while (q.size()) { 
      auto u = q.front(); q.pop();
      for (const auto& [v, id] : ad[u]) { 
        if (l <= id && id <= r) continue;
        if (co[v] == co[u]) return true;
        if (co[v]) continue;
        co[v] = co[u] ^ 3;
        q.push(v);
      }
    }
    return false;
  };
  auto cal = [&](int l, int r) { 
    memset(co, 0, (n + 1) * sizeof(int));
    for (int i = 1; i <= n; ++i) if (!co[i] && color(i, l, r)) return true;
    return false; 
  };

  if (n <= 2000 && q <= 2000) { 
    while (q--) { 
      int l, r; cin >> l >> r;
      cout << (cal(l, r) ? "YES" : "NO") << "\n";
    }
    return 0;
  }

  int l = 1, r = m, ma = -1;
  while (l <= r) { 
    int mid = l + r >> 1;
    if (cal(1, mid)) l = (ma = mid) + 1;
    else r = mid - 1;
  }
  
  while (q--) { 
    int l, r; cin >> l >> r;
    cout << (r <= ma ? "YES" : "NO") << "\n";
  }
}

Compilation message

Joker.cpp: In lambda function:
Joker.cpp:21:10: warning: unused variable 'ret' [-Wunused-variable]
   21 |     bool ret = false;
      |          ^~~
Joker.cpp: In function 'int32_t main()':
Joker.cpp:52:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   52 |     int mid = l + r >> 1;
      |               ~~^~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	5724 KB	Output is correct
2	Correct	1 ms	5556 KB	Output is correct
3	Correct	1 ms	5720 KB	Output is correct
4	Correct	1 ms	5724 KB	Output is correct
5	Correct	1 ms	5724 KB	Output is correct
6	Correct	2 ms	5720 KB	Output is correct
7	Correct	3 ms	5724 KB	Output is correct
8	Correct	2 ms	5724 KB	Output is correct
9	Correct	1 ms	5724 KB	Output is correct
10	Correct	2 ms	5724 KB	Output is correct
11	Correct	3 ms	5724 KB	Output is correct
12	Correct	2 ms	5724 KB	Output is correct
13	Correct	1 ms	5724 KB	Output is correct
14	Correct	2 ms	5724 KB	Output is correct
15	Correct	2 ms	5724 KB	Output is correct
16	Correct	2 ms	5724 KB	Output is correct
17	Correct	2 ms	5540 KB	Output is correct
18	Correct	2 ms	5724 KB	Output is correct
19	Correct	1 ms	5724 KB	Output is correct
20	Correct	1 ms	5724 KB	Output is correct
21	Correct	2 ms	5724 KB	Output is correct
22	Correct	1 ms	5724 KB	Output is correct
23	Correct	2 ms	5724 KB	Output is correct
24	Correct	1 ms	5724 KB	Output is correct
25	Correct	2 ms	5724 KB	Output is correct
26	Correct	1 ms	5724 KB	Output is correct
27	Correct	2 ms	5724 KB	Output is correct
28	Correct	2 ms	5724 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	5724 KB	Output is correct
2	Correct	1 ms	5556 KB	Output is correct
3	Correct	1 ms	5720 KB	Output is correct
4	Correct	1 ms	5724 KB	Output is correct
5	Correct	1 ms	5724 KB	Output is correct
6	Correct	2 ms	5720 KB	Output is correct
7	Correct	3 ms	5724 KB	Output is correct
8	Correct	2 ms	5724 KB	Output is correct
9	Correct	1 ms	5724 KB	Output is correct
10	Correct	2 ms	5724 KB	Output is correct
11	Correct	3 ms	5724 KB	Output is correct
12	Correct	2 ms	5724 KB	Output is correct
13	Correct	1 ms	5724 KB	Output is correct
14	Correct	2 ms	5724 KB	Output is correct
15	Correct	2 ms	5724 KB	Output is correct
16	Correct	2 ms	5724 KB	Output is correct
17	Correct	2 ms	5540 KB	Output is correct
18	Correct	2 ms	5724 KB	Output is correct
19	Correct	1 ms	5724 KB	Output is correct
20	Correct	1 ms	5724 KB	Output is correct
21	Correct	2 ms	5724 KB	Output is correct
22	Correct	1 ms	5724 KB	Output is correct
23	Correct	2 ms	5724 KB	Output is correct
24	Correct	1 ms	5724 KB	Output is correct
25	Correct	2 ms	5724 KB	Output is correct
26	Correct	1 ms	5724 KB	Output is correct
27	Correct	2 ms	5724 KB	Output is correct
28	Correct	2 ms	5724 KB	Output is correct
29	Correct	168 ms	5724 KB	Output is correct
30	Correct	81 ms	5840 KB	Output is correct
31	Correct	71 ms	5720 KB	Output is correct
32	Correct	21 ms	5724 KB	Output is correct
33	Correct	9 ms	5832 KB	Output is correct
34	Correct	54 ms	5724 KB	Output is correct
35	Correct	89 ms	5720 KB	Output is correct
36	Correct	24 ms	5724 KB	Output is correct
37	Correct	119 ms	5820 KB	Output is correct
38	Correct	50 ms	5720 KB	Output is correct
39	Correct	90 ms	5720 KB	Output is correct
40	Correct	51 ms	5720 KB	Output is correct
41	Correct	30 ms	5724 KB	Output is correct
42	Correct	31 ms	5724 KB	Output is correct
43	Correct	3 ms	5724 KB	Output is correct
44	Correct	4 ms	5724 KB	Output is correct
45	Correct	6 ms	5724 KB	Output is correct
46	Correct	16 ms	5816 KB	Output is correct
47	Correct	22 ms	5724 KB	Output is correct
48	Correct	24 ms	5832 KB	Output is correct
49	Correct	48 ms	5724 KB	Output is correct
50	Correct	118 ms	5968 KB	Output is correct
51	Correct	22 ms	5720 KB	Output is correct
52	Correct	52 ms	5720 KB	Output is correct
53	Correct	49 ms	5724 KB	Output is correct
54	Correct	76 ms	5820 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	5724 KB	Output is correct
2	Correct	1 ms	5556 KB	Output is correct
3	Correct	58 ms	11240 KB	Output is correct
4	Correct	142 ms	16976 KB	Output is correct
5	Correct	147 ms	18000 KB	Output is correct
6	Correct	82 ms	16884 KB	Output is correct
7	Correct	59 ms	16872 KB	Output is correct
8	Correct	61 ms	15700 KB	Output is correct
9	Correct	59 ms	16212 KB	Output is correct
10	Correct	154 ms	17068 KB	Output is correct
11	Correct	74 ms	16596 KB	Output is correct
12	Correct	123 ms	17404 KB	Output is correct
13	Correct	49 ms	15700 KB	Output is correct
14	Correct	61 ms	16240 KB	Output is correct
15	Correct	86 ms	16976 KB	Output is correct
16	Correct	159 ms	17612 KB	Output is correct

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	5724 KB	Output is correct
2	Correct	1 ms	5556 KB	Output is correct
3	Correct	1 ms	5720 KB	Output is correct
4	Correct	1 ms	5724 KB	Output is correct
5	Correct	1 ms	5724 KB	Output is correct
6	Correct	2 ms	5720 KB	Output is correct
7	Correct	3 ms	5724 KB	Output is correct
8	Correct	2 ms	5724 KB	Output is correct
9	Correct	1 ms	5724 KB	Output is correct
10	Correct	2 ms	5724 KB	Output is correct
11	Correct	3 ms	5724 KB	Output is correct
12	Correct	2 ms	5724 KB	Output is correct
13	Correct	1 ms	5724 KB	Output is correct
14	Correct	2 ms	5724 KB	Output is correct
15	Correct	2 ms	5724 KB	Output is correct
16	Correct	2 ms	5724 KB	Output is correct
17	Correct	2 ms	5540 KB	Output is correct
18	Correct	2 ms	5724 KB	Output is correct
19	Correct	1 ms	5724 KB	Output is correct
20	Correct	1 ms	5724 KB	Output is correct
21	Correct	2 ms	5724 KB	Output is correct
22	Correct	1 ms	5724 KB	Output is correct
23	Correct	2 ms	5724 KB	Output is correct
24	Correct	1 ms	5724 KB	Output is correct
25	Correct	2 ms	5724 KB	Output is correct
26	Correct	1 ms	5724 KB	Output is correct
27	Correct	2 ms	5724 KB	Output is correct
28	Correct	2 ms	5724 KB	Output is correct
29	Correct	58 ms	11240 KB	Output is correct
30	Correct	142 ms	16976 KB	Output is correct
31	Correct	147 ms	18000 KB	Output is correct
32	Correct	82 ms	16884 KB	Output is correct
33	Correct	59 ms	16872 KB	Output is correct
34	Correct	61 ms	15700 KB	Output is correct
35	Correct	59 ms	16212 KB	Output is correct
36	Correct	154 ms	17068 KB	Output is correct
37	Correct	74 ms	16596 KB	Output is correct
38	Correct	123 ms	17404 KB	Output is correct
39	Correct	49 ms	15700 KB	Output is correct
40	Correct	61 ms	16240 KB	Output is correct
41	Correct	86 ms	16976 KB	Output is correct
42	Correct	159 ms	17612 KB	Output is correct
43	Incorrect	55 ms	15412 KB	Output isn't correct
44	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	5724 KB	Output is correct
2	Correct	1 ms	5556 KB	Output is correct
3	Correct	1 ms	5720 KB	Output is correct
4	Correct	1 ms	5724 KB	Output is correct
5	Correct	1 ms	5724 KB	Output is correct
6	Correct	2 ms	5720 KB	Output is correct
7	Correct	3 ms	5724 KB	Output is correct
8	Correct	2 ms	5724 KB	Output is correct
9	Correct	1 ms	5724 KB	Output is correct
10	Correct	2 ms	5724 KB	Output is correct
11	Correct	3 ms	5724 KB	Output is correct
12	Correct	2 ms	5724 KB	Output is correct
13	Correct	1 ms	5724 KB	Output is correct
14	Correct	2 ms	5724 KB	Output is correct
15	Correct	2 ms	5724 KB	Output is correct
16	Correct	2 ms	5724 KB	Output is correct
17	Correct	2 ms	5540 KB	Output is correct
18	Correct	2 ms	5724 KB	Output is correct
19	Correct	1 ms	5724 KB	Output is correct
20	Correct	1 ms	5724 KB	Output is correct
21	Correct	2 ms	5724 KB	Output is correct
22	Correct	1 ms	5724 KB	Output is correct
23	Correct	2 ms	5724 KB	Output is correct
24	Correct	1 ms	5724 KB	Output is correct
25	Correct	2 ms	5724 KB	Output is correct
26	Correct	1 ms	5724 KB	Output is correct
27	Correct	2 ms	5724 KB	Output is correct
28	Correct	2 ms	5724 KB	Output is correct
29	Correct	168 ms	5724 KB	Output is correct
30	Correct	81 ms	5840 KB	Output is correct
31	Correct	71 ms	5720 KB	Output is correct
32	Correct	21 ms	5724 KB	Output is correct
33	Correct	9 ms	5832 KB	Output is correct
34	Correct	54 ms	5724 KB	Output is correct
35	Correct	89 ms	5720 KB	Output is correct
36	Correct	24 ms	5724 KB	Output is correct
37	Correct	119 ms	5820 KB	Output is correct
38	Correct	50 ms	5720 KB	Output is correct
39	Correct	90 ms	5720 KB	Output is correct
40	Correct	51 ms	5720 KB	Output is correct
41	Correct	30 ms	5724 KB	Output is correct
42	Correct	31 ms	5724 KB	Output is correct
43	Correct	3 ms	5724 KB	Output is correct
44	Correct	4 ms	5724 KB	Output is correct
45	Correct	6 ms	5724 KB	Output is correct
46	Correct	16 ms	5816 KB	Output is correct
47	Correct	22 ms	5724 KB	Output is correct
48	Correct	24 ms	5832 KB	Output is correct
49	Correct	48 ms	5724 KB	Output is correct
50	Correct	118 ms	5968 KB	Output is correct
51	Correct	22 ms	5720 KB	Output is correct
52	Correct	52 ms	5720 KB	Output is correct
53	Correct	49 ms	5724 KB	Output is correct
54	Correct	76 ms	5820 KB	Output is correct
55	Incorrect	45 ms	10576 KB	Output isn't correct
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	5724 KB	Output is correct
2	Correct	1 ms	5556 KB	Output is correct
3	Correct	1 ms	5720 KB	Output is correct
4	Correct	1 ms	5724 KB	Output is correct
5	Correct	1 ms	5724 KB	Output is correct
6	Correct	2 ms	5720 KB	Output is correct
7	Correct	3 ms	5724 KB	Output is correct
8	Correct	2 ms	5724 KB	Output is correct
9	Correct	1 ms	5724 KB	Output is correct
10	Correct	2 ms	5724 KB	Output is correct
11	Correct	3 ms	5724 KB	Output is correct
12	Correct	2 ms	5724 KB	Output is correct
13	Correct	1 ms	5724 KB	Output is correct
14	Correct	2 ms	5724 KB	Output is correct
15	Correct	2 ms	5724 KB	Output is correct
16	Correct	2 ms	5724 KB	Output is correct
17	Correct	2 ms	5540 KB	Output is correct
18	Correct	2 ms	5724 KB	Output is correct
19	Correct	1 ms	5724 KB	Output is correct
20	Correct	1 ms	5724 KB	Output is correct
21	Correct	2 ms	5724 KB	Output is correct
22	Correct	1 ms	5724 KB	Output is correct
23	Correct	2 ms	5724 KB	Output is correct
24	Correct	1 ms	5724 KB	Output is correct
25	Correct	2 ms	5724 KB	Output is correct
26	Correct	1 ms	5724 KB	Output is correct
27	Correct	2 ms	5724 KB	Output is correct
28	Correct	2 ms	5724 KB	Output is correct
29	Correct	168 ms	5724 KB	Output is correct
30	Correct	81 ms	5840 KB	Output is correct
31	Correct	71 ms	5720 KB	Output is correct
32	Correct	21 ms	5724 KB	Output is correct
33	Correct	9 ms	5832 KB	Output is correct
34	Correct	54 ms	5724 KB	Output is correct
35	Correct	89 ms	5720 KB	Output is correct
36	Correct	24 ms	5724 KB	Output is correct
37	Correct	119 ms	5820 KB	Output is correct
38	Correct	50 ms	5720 KB	Output is correct
39	Correct	90 ms	5720 KB	Output is correct
40	Correct	51 ms	5720 KB	Output is correct
41	Correct	30 ms	5724 KB	Output is correct
42	Correct	31 ms	5724 KB	Output is correct
43	Correct	3 ms	5724 KB	Output is correct
44	Correct	4 ms	5724 KB	Output is correct
45	Correct	6 ms	5724 KB	Output is correct
46	Correct	16 ms	5816 KB	Output is correct
47	Correct	22 ms	5724 KB	Output is correct
48	Correct	24 ms	5832 KB	Output is correct
49	Correct	48 ms	5724 KB	Output is correct
50	Correct	118 ms	5968 KB	Output is correct
51	Correct	22 ms	5720 KB	Output is correct
52	Correct	52 ms	5720 KB	Output is correct
53	Correct	49 ms	5724 KB	Output is correct
54	Correct	76 ms	5820 KB	Output is correct
55	Correct	58 ms	11240 KB	Output is correct
56	Correct	142 ms	16976 KB	Output is correct
57	Correct	147 ms	18000 KB	Output is correct
58	Correct	82 ms	16884 KB	Output is correct
59	Correct	59 ms	16872 KB	Output is correct
60	Correct	61 ms	15700 KB	Output is correct
61	Correct	59 ms	16212 KB	Output is correct
62	Correct	154 ms	17068 KB	Output is correct
63	Correct	74 ms	16596 KB	Output is correct
64	Correct	123 ms	17404 KB	Output is correct
65	Correct	49 ms	15700 KB	Output is correct
66	Correct	61 ms	16240 KB	Output is correct
67	Correct	86 ms	16976 KB	Output is correct
68	Correct	159 ms	17612 KB	Output is correct
69	Incorrect	55 ms	15412 KB	Output isn't correct
70	Halted	0 ms	0 KB	-

답안 #1050417

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 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
25.0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
0 / 22.0

Subtask #6
0 / 29.0