답안 #1050559

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1050559	2024-08-09T11:06:32 Z	duckindog	Joker (BOI20_joker)	C++17	14 / 100	40 ms	9820 KB

Joker

#include <bits/stdc++.h>

using namespace std;

const int N = 200'000 + 10;
int n, m, q;
struct Edge { 
  int u, v;
  friend istream& operator >> (istream& is, auto& rhs) { 
    return is >> rhs.u >> rhs.v;
  }
} edge[N];

struct DSU { 
  int id[N], co[N], cnt;
  bool mk[N];

  void clear() { 
    memset(id, -1, (n + 1) * sizeof(int));
    memset(co, 0, (n + 1) * sizeof(int));
    memset(mk, false, (n + 1) * sizeof(int));
    cnt = 0;
  }

  int root(int u) { return id[u] < 0 ? u : root(id[u]); }
  bool chk(int u) { return id[u] < 0 ? mk[u] : mk[u] ^ chk(id[u]); }
  inline int color(int u) { return co[u] ^ chk(u); }
  void add(int u, int v) { 
    int oU = u, oV = v;

    u = root(u); v = root(v);
    if (u == v) { cnt += color(oU) == color(oV); return; }
    
    if (id[u] > id[v]) swap(u, v);
    if (color(oU) == color(oV)) mk[v] ^= 1;

    id[u] += id[v];
    id[v] = u; 
  }
} T;

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

  cin >> n >> m >> q;
  for (int i = 1; i <= m; ++i) cin >> edge[i];
  
  while (q--) { 
    int l, r; cin >> l >> r;
    
    T.clear();
    for (int i = 1; i < l; ++i) T.add(edge[i].u, edge[i].v);
    for (int i = m; i > r; --i) T.add(edge[i].u, edge[i].v);

    cout << (T.cnt ? "YES" : "NO") << "\n";
  }
}

Compilation message

Joker.cpp:9:45: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
    9 |   friend istream& operator >> (istream& is, auto& rhs) {
      |                                             ^~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2512 KB	Output is correct
5	Correct	0 ms	2512 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2420 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	0 ms	2396 KB	Output is correct
19	Correct	0 ms	2396 KB	Output is correct
20	Correct	0 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	0 ms	2396 KB	Output is correct
24	Correct	0 ms	2396 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2392 KB	Output is correct
27	Correct	0 ms	2396 KB	Output is correct
28	Correct	1 ms	2392 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2512 KB	Output is correct
5	Correct	0 ms	2512 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2420 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	0 ms	2396 KB	Output is correct
19	Correct	0 ms	2396 KB	Output is correct
20	Correct	0 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	0 ms	2396 KB	Output is correct
24	Correct	0 ms	2396 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2392 KB	Output is correct
27	Correct	0 ms	2396 KB	Output is correct
28	Correct	1 ms	2392 KB	Output is correct
29	Correct	8 ms	2396 KB	Output is correct
30	Correct	19 ms	2396 KB	Output is correct
31	Correct	19 ms	2396 KB	Output is correct
32	Correct	17 ms	2560 KB	Output is correct
33	Correct	17 ms	2396 KB	Output is correct
34	Correct	17 ms	2396 KB	Output is correct
35	Correct	21 ms	2560 KB	Output is correct
36	Correct	10 ms	2396 KB	Output is correct
37	Correct	15 ms	2652 KB	Output is correct
38	Correct	20 ms	2396 KB	Output is correct
39	Correct	12 ms	2396 KB	Output is correct
40	Correct	15 ms	2552 KB	Output is correct
41	Correct	15 ms	2392 KB	Output is correct
42	Correct	15 ms	2396 KB	Output is correct
43	Correct	34 ms	2556 KB	Output is correct
44	Correct	38 ms	2396 KB	Output is correct
45	Correct	40 ms	2396 KB	Output is correct
46	Correct	39 ms	2396 KB	Output is correct
47	Correct	15 ms	2392 KB	Output is correct
48	Correct	16 ms	2396 KB	Output is correct
49	Correct	16 ms	2396 KB	Output is correct
50	Correct	15 ms	2396 KB	Output is correct
51	Correct	17 ms	2556 KB	Output is correct
52	Correct	18 ms	2396 KB	Output is correct
53	Correct	17 ms	2396 KB	Output is correct
54	Correct	18 ms	2396 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Runtime error	19 ms	9820 KB	Execution killed with signal 6
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2512 KB	Output is correct
5	Correct	0 ms	2512 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2420 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	0 ms	2396 KB	Output is correct
19	Correct	0 ms	2396 KB	Output is correct
20	Correct	0 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	0 ms	2396 KB	Output is correct
24	Correct	0 ms	2396 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2392 KB	Output is correct
27	Correct	0 ms	2396 KB	Output is correct
28	Correct	1 ms	2392 KB	Output is correct
29	Runtime error	19 ms	9820 KB	Execution killed with signal 6
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2512 KB	Output is correct
5	Correct	0 ms	2512 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2420 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	0 ms	2396 KB	Output is correct
19	Correct	0 ms	2396 KB	Output is correct
20	Correct	0 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	0 ms	2396 KB	Output is correct
24	Correct	0 ms	2396 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2392 KB	Output is correct
27	Correct	0 ms	2396 KB	Output is correct
28	Correct	1 ms	2392 KB	Output is correct
29	Correct	8 ms	2396 KB	Output is correct
30	Correct	19 ms	2396 KB	Output is correct
31	Correct	19 ms	2396 KB	Output is correct
32	Correct	17 ms	2560 KB	Output is correct
33	Correct	17 ms	2396 KB	Output is correct
34	Correct	17 ms	2396 KB	Output is correct
35	Correct	21 ms	2560 KB	Output is correct
36	Correct	10 ms	2396 KB	Output is correct
37	Correct	15 ms	2652 KB	Output is correct
38	Correct	20 ms	2396 KB	Output is correct
39	Correct	12 ms	2396 KB	Output is correct
40	Correct	15 ms	2552 KB	Output is correct
41	Correct	15 ms	2392 KB	Output is correct
42	Correct	15 ms	2396 KB	Output is correct
43	Correct	34 ms	2556 KB	Output is correct
44	Correct	38 ms	2396 KB	Output is correct
45	Correct	40 ms	2396 KB	Output is correct
46	Correct	39 ms	2396 KB	Output is correct
47	Correct	15 ms	2392 KB	Output is correct
48	Correct	16 ms	2396 KB	Output is correct
49	Correct	16 ms	2396 KB	Output is correct
50	Correct	15 ms	2396 KB	Output is correct
51	Correct	17 ms	2556 KB	Output is correct
52	Correct	18 ms	2396 KB	Output is correct
53	Correct	17 ms	2396 KB	Output is correct
54	Correct	18 ms	2396 KB	Output is correct
55	Runtime error	20 ms	9556 KB	Execution killed with signal 6
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	0 ms	2396 KB	Output is correct
3	Correct	0 ms	2396 KB	Output is correct
4	Correct	0 ms	2512 KB	Output is correct
5	Correct	0 ms	2512 KB	Output is correct
6	Correct	0 ms	2396 KB	Output is correct
7	Correct	0 ms	2420 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	0 ms	2396 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	0 ms	2396 KB	Output is correct
19	Correct	0 ms	2396 KB	Output is correct
20	Correct	0 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	0 ms	2396 KB	Output is correct
24	Correct	0 ms	2396 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2392 KB	Output is correct
27	Correct	0 ms	2396 KB	Output is correct
28	Correct	1 ms	2392 KB	Output is correct
29	Correct	8 ms	2396 KB	Output is correct
30	Correct	19 ms	2396 KB	Output is correct
31	Correct	19 ms	2396 KB	Output is correct
32	Correct	17 ms	2560 KB	Output is correct
33	Correct	17 ms	2396 KB	Output is correct
34	Correct	17 ms	2396 KB	Output is correct
35	Correct	21 ms	2560 KB	Output is correct
36	Correct	10 ms	2396 KB	Output is correct
37	Correct	15 ms	2652 KB	Output is correct
38	Correct	20 ms	2396 KB	Output is correct
39	Correct	12 ms	2396 KB	Output is correct
40	Correct	15 ms	2552 KB	Output is correct
41	Correct	15 ms	2392 KB	Output is correct
42	Correct	15 ms	2396 KB	Output is correct
43	Correct	34 ms	2556 KB	Output is correct
44	Correct	38 ms	2396 KB	Output is correct
45	Correct	40 ms	2396 KB	Output is correct
46	Correct	39 ms	2396 KB	Output is correct
47	Correct	15 ms	2392 KB	Output is correct
48	Correct	16 ms	2396 KB	Output is correct
49	Correct	16 ms	2396 KB	Output is correct
50	Correct	15 ms	2396 KB	Output is correct
51	Correct	17 ms	2556 KB	Output is correct
52	Correct	18 ms	2396 KB	Output is correct
53	Correct	17 ms	2396 KB	Output is correct
54	Correct	18 ms	2396 KB	Output is correct
55	Runtime error	19 ms	9820 KB	Execution killed with signal 6
56	Halted	0 ms	0 KB	-

답안 #1050559

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