답안 #1050409

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1050409	2024-08-09T09:13:29 Z	duckindog	Joker (BOI20_joker)	C++17	14 / 100	161 ms	604 KB

Joker

#include <bits/stdc++.h>

using namespace std;

const int N = 2000 + 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, sizeof co);
    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(l, 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	0 ms	344 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	508 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	360 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	0 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	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 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	508 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	360 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	0 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	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	161 ms	348 KB	Output is correct
30	Correct	77 ms	344 KB	Output is correct
31	Correct	48 ms	344 KB	Output is correct
32	Correct	20 ms	348 KB	Output is correct
33	Correct	8 ms	348 KB	Output is correct
34	Correct	53 ms	580 KB	Output is correct
35	Correct	83 ms	584 KB	Output is correct
36	Correct	23 ms	596 KB	Output is correct
37	Correct	86 ms	348 KB	Output is correct
38	Correct	51 ms	344 KB	Output is correct
39	Correct	88 ms	348 KB	Output is correct
40	Correct	29 ms	348 KB	Output is correct
41	Correct	28 ms	592 KB	Output is correct
42	Correct	32 ms	348 KB	Output is correct
43	Correct	2 ms	344 KB	Output is correct
44	Correct	3 ms	348 KB	Output is correct
45	Correct	5 ms	348 KB	Output is correct
46	Correct	12 ms	348 KB	Output is correct
47	Correct	22 ms	348 KB	Output is correct
48	Correct	24 ms	576 KB	Output is correct
49	Correct	48 ms	588 KB	Output is correct
50	Correct	71 ms	344 KB	Output is correct
51	Correct	22 ms	344 KB	Output is correct
52	Correct	32 ms	348 KB	Output is correct
53	Correct	48 ms	348 KB	Output is correct
54	Correct	75 ms	344 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Runtime error	1 ms	604 KB	Execution killed with signal 11
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 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	508 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	360 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	0 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	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Runtime error	1 ms	604 KB	Execution killed with signal 11
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 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	508 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	360 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	0 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	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	161 ms	348 KB	Output is correct
30	Correct	77 ms	344 KB	Output is correct
31	Correct	48 ms	344 KB	Output is correct
32	Correct	20 ms	348 KB	Output is correct
33	Correct	8 ms	348 KB	Output is correct
34	Correct	53 ms	580 KB	Output is correct
35	Correct	83 ms	584 KB	Output is correct
36	Correct	23 ms	596 KB	Output is correct
37	Correct	86 ms	348 KB	Output is correct
38	Correct	51 ms	344 KB	Output is correct
39	Correct	88 ms	348 KB	Output is correct
40	Correct	29 ms	348 KB	Output is correct
41	Correct	28 ms	592 KB	Output is correct
42	Correct	32 ms	348 KB	Output is correct
43	Correct	2 ms	344 KB	Output is correct
44	Correct	3 ms	348 KB	Output is correct
45	Correct	5 ms	348 KB	Output is correct
46	Correct	12 ms	348 KB	Output is correct
47	Correct	22 ms	348 KB	Output is correct
48	Correct	24 ms	576 KB	Output is correct
49	Correct	48 ms	588 KB	Output is correct
50	Correct	71 ms	344 KB	Output is correct
51	Correct	22 ms	344 KB	Output is correct
52	Correct	32 ms	348 KB	Output is correct
53	Correct	48 ms	348 KB	Output is correct
54	Correct	75 ms	344 KB	Output is correct
55	Runtime error	1 ms	604 KB	Execution killed with signal 11
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 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	508 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	1 ms	348 KB	Output is correct
13	Correct	0 ms	360 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	0 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	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	161 ms	348 KB	Output is correct
30	Correct	77 ms	344 KB	Output is correct
31	Correct	48 ms	344 KB	Output is correct
32	Correct	20 ms	348 KB	Output is correct
33	Correct	8 ms	348 KB	Output is correct
34	Correct	53 ms	580 KB	Output is correct
35	Correct	83 ms	584 KB	Output is correct
36	Correct	23 ms	596 KB	Output is correct
37	Correct	86 ms	348 KB	Output is correct
38	Correct	51 ms	344 KB	Output is correct
39	Correct	88 ms	348 KB	Output is correct
40	Correct	29 ms	348 KB	Output is correct
41	Correct	28 ms	592 KB	Output is correct
42	Correct	32 ms	348 KB	Output is correct
43	Correct	2 ms	344 KB	Output is correct
44	Correct	3 ms	348 KB	Output is correct
45	Correct	5 ms	348 KB	Output is correct
46	Correct	12 ms	348 KB	Output is correct
47	Correct	22 ms	348 KB	Output is correct
48	Correct	24 ms	576 KB	Output is correct
49	Correct	48 ms	588 KB	Output is correct
50	Correct	71 ms	344 KB	Output is correct
51	Correct	22 ms	344 KB	Output is correct
52	Correct	32 ms	348 KB	Output is correct
53	Correct	48 ms	348 KB	Output is correct
54	Correct	75 ms	344 KB	Output is correct
55	Runtime error	1 ms	604 KB	Execution killed with signal 11
56	Halted	0 ms	0 KB	-

답안 #1050409

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