oj.uz

Submission #1050559

# Submission time Handle Problem Language Result Execution time Memory
1050559 2024-08-09T11:06:32 Z duckindog Joker (BOI20_joker) C++17
14 / 100
 40 ms 9820 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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 -