/*input
3
1 2 1
2 3 1
3 1 2
*/
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
int V[101010], C[101010], D[101010];
int Sc[101010], Sd[101010];
vector<int>adj[101010];
int pa[101010];
void dfs(int i, int p)
{
pa[i] = p;
for (int j : adj[i])
{
if (j != p)
dfs(j, i);
}
}
void initialize(int N, vector<int> A, vector<int> B)
{
for (int i = 0; i < N - 1; i++)
{
adj[A[i]].push_back(B[i]);
adj[B[i]].push_back(A[i]);
}
dfs(1, 0);
}
int ans = 0;
void recalc(int v)
{
Sc[pa[v]] -= C[v];
Sd[pa[v]] -= D[v];
C[v] = Sc[v];
D[v] = Sd[v];
if (V[v] == -1)
D[v] = C[v] + 1;
if (V[v] == 1)
C[v] = D[v] + 1;
C[v] = min(C[v], D[v] + 1);
D[v] = min(D[v], C[v] + 1);
Sc[pa[v]] += C[v];
Sd[pa[v]] += D[v];
if (v != 1)
recalc(pa[v]);
}
int cat(int v)
{
V[v] = -1;
recalc(v);
return ans + min(C[1], D[1]);
}
int dog(int v)
{
V[v] = 1;
recalc(v);
return ans + min(C[1], D[1]);
}
int neighbor(int v)
{
V[v] = 0;
recalc(v);
return ans + min(C[1], D[1]);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2680 KB |
Output is correct |
2 |
Correct |
4 ms |
2680 KB |
Output is correct |
3 |
Correct |
4 ms |
2680 KB |
Output is correct |
4 |
Correct |
4 ms |
2680 KB |
Output is correct |
5 |
Correct |
4 ms |
2680 KB |
Output is correct |
6 |
Correct |
4 ms |
2680 KB |
Output is correct |
7 |
Correct |
4 ms |
2680 KB |
Output is correct |
8 |
Correct |
4 ms |
2680 KB |
Output is correct |
9 |
Correct |
4 ms |
2680 KB |
Output is correct |
10 |
Correct |
4 ms |
2680 KB |
Output is correct |
11 |
Correct |
4 ms |
2680 KB |
Output is correct |
12 |
Correct |
4 ms |
2680 KB |
Output is correct |
13 |
Correct |
4 ms |
2680 KB |
Output is correct |
14 |
Correct |
4 ms |
2684 KB |
Output is correct |
15 |
Correct |
4 ms |
2680 KB |
Output is correct |
16 |
Correct |
5 ms |
2684 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2680 KB |
Output is correct |
2 |
Correct |
4 ms |
2680 KB |
Output is correct |
3 |
Correct |
4 ms |
2680 KB |
Output is correct |
4 |
Correct |
4 ms |
2680 KB |
Output is correct |
5 |
Correct |
4 ms |
2680 KB |
Output is correct |
6 |
Correct |
4 ms |
2680 KB |
Output is correct |
7 |
Correct |
4 ms |
2680 KB |
Output is correct |
8 |
Correct |
4 ms |
2680 KB |
Output is correct |
9 |
Correct |
4 ms |
2680 KB |
Output is correct |
10 |
Correct |
4 ms |
2680 KB |
Output is correct |
11 |
Correct |
4 ms |
2680 KB |
Output is correct |
12 |
Correct |
4 ms |
2680 KB |
Output is correct |
13 |
Correct |
4 ms |
2680 KB |
Output is correct |
14 |
Correct |
4 ms |
2684 KB |
Output is correct |
15 |
Correct |
4 ms |
2680 KB |
Output is correct |
16 |
Correct |
5 ms |
2684 KB |
Output is correct |
17 |
Correct |
5 ms |
2808 KB |
Output is correct |
18 |
Correct |
5 ms |
2808 KB |
Output is correct |
19 |
Correct |
5 ms |
2808 KB |
Output is correct |
20 |
Correct |
4 ms |
2808 KB |
Output is correct |
21 |
Correct |
4 ms |
2808 KB |
Output is correct |
22 |
Correct |
5 ms |
2780 KB |
Output is correct |
23 |
Correct |
5 ms |
2808 KB |
Output is correct |
24 |
Correct |
5 ms |
2808 KB |
Output is correct |
25 |
Correct |
5 ms |
2680 KB |
Output is correct |
26 |
Correct |
6 ms |
2728 KB |
Output is correct |
27 |
Correct |
6 ms |
2680 KB |
Output is correct |
28 |
Correct |
5 ms |
2812 KB |
Output is correct |
29 |
Correct |
7 ms |
2808 KB |
Output is correct |
30 |
Correct |
4 ms |
2684 KB |
Output is correct |
31 |
Correct |
4 ms |
2812 KB |
Output is correct |
32 |
Correct |
5 ms |
2680 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4 ms |
2680 KB |
Output is correct |
2 |
Correct |
4 ms |
2680 KB |
Output is correct |
3 |
Correct |
4 ms |
2680 KB |
Output is correct |
4 |
Correct |
4 ms |
2680 KB |
Output is correct |
5 |
Correct |
4 ms |
2680 KB |
Output is correct |
6 |
Correct |
4 ms |
2680 KB |
Output is correct |
7 |
Correct |
4 ms |
2680 KB |
Output is correct |
8 |
Correct |
4 ms |
2680 KB |
Output is correct |
9 |
Correct |
4 ms |
2680 KB |
Output is correct |
10 |
Correct |
4 ms |
2680 KB |
Output is correct |
11 |
Correct |
4 ms |
2680 KB |
Output is correct |
12 |
Correct |
4 ms |
2680 KB |
Output is correct |
13 |
Correct |
4 ms |
2680 KB |
Output is correct |
14 |
Correct |
4 ms |
2684 KB |
Output is correct |
15 |
Correct |
4 ms |
2680 KB |
Output is correct |
16 |
Correct |
5 ms |
2684 KB |
Output is correct |
17 |
Correct |
5 ms |
2808 KB |
Output is correct |
18 |
Correct |
5 ms |
2808 KB |
Output is correct |
19 |
Correct |
5 ms |
2808 KB |
Output is correct |
20 |
Correct |
4 ms |
2808 KB |
Output is correct |
21 |
Correct |
4 ms |
2808 KB |
Output is correct |
22 |
Correct |
5 ms |
2780 KB |
Output is correct |
23 |
Correct |
5 ms |
2808 KB |
Output is correct |
24 |
Correct |
5 ms |
2808 KB |
Output is correct |
25 |
Correct |
5 ms |
2680 KB |
Output is correct |
26 |
Correct |
6 ms |
2728 KB |
Output is correct |
27 |
Correct |
6 ms |
2680 KB |
Output is correct |
28 |
Correct |
5 ms |
2812 KB |
Output is correct |
29 |
Correct |
7 ms |
2808 KB |
Output is correct |
30 |
Correct |
4 ms |
2684 KB |
Output is correct |
31 |
Correct |
4 ms |
2812 KB |
Output is correct |
32 |
Correct |
5 ms |
2680 KB |
Output is correct |
33 |
Correct |
159 ms |
7116 KB |
Output is correct |
34 |
Correct |
79 ms |
7036 KB |
Output is correct |
35 |
Correct |
216 ms |
6256 KB |
Output is correct |
36 |
Correct |
276 ms |
10044 KB |
Output is correct |
37 |
Correct |
22 ms |
4856 KB |
Output is correct |
38 |
Correct |
285 ms |
10764 KB |
Output is correct |
39 |
Correct |
298 ms |
10800 KB |
Output is correct |
40 |
Correct |
361 ms |
10804 KB |
Output is correct |
41 |
Correct |
344 ms |
10792 KB |
Output is correct |
42 |
Correct |
409 ms |
10784 KB |
Output is correct |
43 |
Correct |
326 ms |
10792 KB |
Output is correct |
44 |
Correct |
363 ms |
10728 KB |
Output is correct |
45 |
Correct |
503 ms |
10700 KB |
Output is correct |
46 |
Correct |
341 ms |
10728 KB |
Output is correct |
47 |
Correct |
287 ms |
10856 KB |
Output is correct |
48 |
Correct |
64 ms |
8136 KB |
Output is correct |
49 |
Correct |
74 ms |
9248 KB |
Output is correct |
50 |
Correct |
24 ms |
4348 KB |
Output is correct |
51 |
Correct |
32 ms |
5340 KB |
Output is correct |
52 |
Correct |
19 ms |
4092 KB |
Output is correct |
53 |
Correct |
160 ms |
9708 KB |
Output is correct |
54 |
Correct |
96 ms |
6064 KB |
Output is correct |
55 |
Correct |
255 ms |
8532 KB |
Output is correct |
56 |
Correct |
155 ms |
6560 KB |
Output is correct |
57 |
Correct |
240 ms |
9524 KB |
Output is correct |
58 |
Correct |
25 ms |
5292 KB |
Output is correct |
59 |
Correct |
31 ms |
5240 KB |
Output is correct |
60 |
Correct |
69 ms |
8572 KB |
Output is correct |
61 |
Correct |
74 ms |
8928 KB |
Output is correct |
62 |
Correct |
50 ms |
7376 KB |
Output is correct |
63 |
Execution timed out |
3043 ms |
7112 KB |
Time limit exceeded |
64 |
Halted |
0 ms |
0 KB |
- |