#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
using vi = vector<int>;
using vvi = vector<vi>;
const int mx = 200'000;
int N;
vi edge[1+mx];
int DP[1+mx];
vi power;
vi children[1+mx];
int res = 1;
void dfs(int u, int p)
{
for(int v : edge[u])
{
if(v == p) continue;
children[u].push_back(v);
dfs(v, u);
}
if(power[u]) DP[u] = 1;
else DP[u] = 0;
int curr = -power[u];
for(int v : children[u])
curr += max(0, DP[v]);
DP[u] = max(DP[u], curr);
for(int v : children[u])
res = max(res, power[u] + DP[v]);
curr = -power[u];
for(int v : children[u])
curr += max(0, DP[v]);
res = max(res, curr);
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> N;
for(int e = 1; e <= N-1; e++)
{
int a, b;
cin >> a >> b;
edge[a].push_back(b);
edge[b].push_back(a);
}
power = vi(1+N);
for(int i = 1; i <= N; i++)
{
char c;
cin >> c;
if(c == '1') power[i] = 1;
else power[i] = 0;
}
dfs(1, 0);
cout << res << '\n';
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 2 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 3 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 4 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 5 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 6 |
Correct |
6 ms |
9720 KB |
Output is correct |
| 7 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 8 |
Correct |
5 ms |
9744 KB |
Output is correct |
| 9 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 10 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 11 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 12 |
Correct |
6 ms |
9684 KB |
Output is correct |
| 13 |
Correct |
7 ms |
9684 KB |
Output is correct |
| 14 |
Correct |
8 ms |
9684 KB |
Output is correct |
| 15 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 16 |
Correct |
7 ms |
9664 KB |
Output is correct |
| 17 |
Correct |
7 ms |
9684 KB |
Output is correct |
| 18 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 19 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 20 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 21 |
Correct |
5 ms |
9716 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 2 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 3 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 4 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 5 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 6 |
Correct |
6 ms |
9720 KB |
Output is correct |
| 7 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 8 |
Correct |
5 ms |
9744 KB |
Output is correct |
| 9 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 10 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 11 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 12 |
Correct |
6 ms |
9684 KB |
Output is correct |
| 13 |
Correct |
7 ms |
9684 KB |
Output is correct |
| 14 |
Correct |
8 ms |
9684 KB |
Output is correct |
| 15 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 16 |
Correct |
7 ms |
9664 KB |
Output is correct |
| 17 |
Correct |
7 ms |
9684 KB |
Output is correct |
| 18 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 19 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 20 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 21 |
Correct |
5 ms |
9716 KB |
Output is correct |
| 22 |
Correct |
5 ms |
9812 KB |
Output is correct |
| 23 |
Correct |
6 ms |
9732 KB |
Output is correct |
| 24 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 25 |
Correct |
6 ms |
9736 KB |
Output is correct |
| 26 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 27 |
Correct |
8 ms |
9812 KB |
Output is correct |
| 28 |
Correct |
7 ms |
9812 KB |
Output is correct |
| 29 |
Correct |
7 ms |
9984 KB |
Output is correct |
| 30 |
Correct |
6 ms |
9920 KB |
Output is correct |
| 31 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 32 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 33 |
Correct |
6 ms |
9860 KB |
Output is correct |
| 34 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 35 |
Correct |
6 ms |
9864 KB |
Output is correct |
| 36 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 37 |
Correct |
6 ms |
9736 KB |
Output is correct |
| 38 |
Correct |
6 ms |
9776 KB |
Output is correct |
| 39 |
Correct |
8 ms |
9812 KB |
Output is correct |
| 40 |
Correct |
6 ms |
9852 KB |
Output is correct |
| 41 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 42 |
Correct |
7 ms |
9860 KB |
Output is correct |
| 43 |
Correct |
8 ms |
9856 KB |
Output is correct |
| 44 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 45 |
Correct |
7 ms |
9776 KB |
Output is correct |
| 46 |
Correct |
8 ms |
9772 KB |
Output is correct |
| 47 |
Correct |
7 ms |
9860 KB |
Output is correct |
| 48 |
Correct |
6 ms |
9916 KB |
Output is correct |
| 49 |
Correct |
6 ms |
9864 KB |
Output is correct |
| 50 |
Correct |
6 ms |
9852 KB |
Output is correct |
| 51 |
Correct |
6 ms |
9864 KB |
Output is correct |
| 52 |
Correct |
7 ms |
9860 KB |
Output is correct |
| 53 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 54 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 55 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 56 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 57 |
Correct |
6 ms |
9992 KB |
Output is correct |
| 58 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 59 |
Correct |
6 ms |
9788 KB |
Output is correct |
| 60 |
Correct |
6 ms |
9940 KB |
Output is correct |
| 61 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 62 |
Correct |
6 ms |
9980 KB |
Output is correct |
| 63 |
Correct |
5 ms |
9812 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 2 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 3 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 4 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 5 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 6 |
Correct |
6 ms |
9720 KB |
Output is correct |
| 7 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 8 |
Correct |
5 ms |
9744 KB |
Output is correct |
| 9 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 10 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 11 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 12 |
Correct |
6 ms |
9684 KB |
Output is correct |
| 13 |
Correct |
7 ms |
9684 KB |
Output is correct |
| 14 |
Correct |
8 ms |
9684 KB |
Output is correct |
| 15 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 16 |
Correct |
7 ms |
9664 KB |
Output is correct |
| 17 |
Correct |
7 ms |
9684 KB |
Output is correct |
| 18 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 19 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 20 |
Correct |
5 ms |
9684 KB |
Output is correct |
| 21 |
Correct |
5 ms |
9716 KB |
Output is correct |
| 22 |
Correct |
5 ms |
9812 KB |
Output is correct |
| 23 |
Correct |
6 ms |
9732 KB |
Output is correct |
| 24 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 25 |
Correct |
6 ms |
9736 KB |
Output is correct |
| 26 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 27 |
Correct |
8 ms |
9812 KB |
Output is correct |
| 28 |
Correct |
7 ms |
9812 KB |
Output is correct |
| 29 |
Correct |
7 ms |
9984 KB |
Output is correct |
| 30 |
Correct |
6 ms |
9920 KB |
Output is correct |
| 31 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 32 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 33 |
Correct |
6 ms |
9860 KB |
Output is correct |
| 34 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 35 |
Correct |
6 ms |
9864 KB |
Output is correct |
| 36 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 37 |
Correct |
6 ms |
9736 KB |
Output is correct |
| 38 |
Correct |
6 ms |
9776 KB |
Output is correct |
| 39 |
Correct |
8 ms |
9812 KB |
Output is correct |
| 40 |
Correct |
6 ms |
9852 KB |
Output is correct |
| 41 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 42 |
Correct |
7 ms |
9860 KB |
Output is correct |
| 43 |
Correct |
8 ms |
9856 KB |
Output is correct |
| 44 |
Correct |
7 ms |
9856 KB |
Output is correct |
| 45 |
Correct |
7 ms |
9776 KB |
Output is correct |
| 46 |
Correct |
8 ms |
9772 KB |
Output is correct |
| 47 |
Correct |
7 ms |
9860 KB |
Output is correct |
| 48 |
Correct |
6 ms |
9916 KB |
Output is correct |
| 49 |
Correct |
6 ms |
9864 KB |
Output is correct |
| 50 |
Correct |
6 ms |
9852 KB |
Output is correct |
| 51 |
Correct |
6 ms |
9864 KB |
Output is correct |
| 52 |
Correct |
7 ms |
9860 KB |
Output is correct |
| 53 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 54 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 55 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 56 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 57 |
Correct |
6 ms |
9992 KB |
Output is correct |
| 58 |
Correct |
6 ms |
9812 KB |
Output is correct |
| 59 |
Correct |
6 ms |
9788 KB |
Output is correct |
| 60 |
Correct |
6 ms |
9940 KB |
Output is correct |
| 61 |
Correct |
6 ms |
9728 KB |
Output is correct |
| 62 |
Correct |
6 ms |
9980 KB |
Output is correct |
| 63 |
Correct |
5 ms |
9812 KB |
Output is correct |
| 64 |
Correct |
148 ms |
24088 KB |
Output is correct |
| 65 |
Correct |
168 ms |
24056 KB |
Output is correct |
| 66 |
Correct |
181 ms |
24072 KB |
Output is correct |
| 67 |
Correct |
177 ms |
24100 KB |
Output is correct |
| 68 |
Correct |
186 ms |
24028 KB |
Output is correct |
| 69 |
Correct |
165 ms |
24048 KB |
Output is correct |
| 70 |
Correct |
169 ms |
24056 KB |
Output is correct |
| 71 |
Correct |
172 ms |
24140 KB |
Output is correct |
| 72 |
Correct |
142 ms |
23980 KB |
Output is correct |
| 73 |
Correct |
174 ms |
39228 KB |
Output is correct |
| 74 |
Correct |
185 ms |
39164 KB |
Output is correct |
| 75 |
Correct |
160 ms |
23316 KB |
Output is correct |
| 76 |
Correct |
188 ms |
23432 KB |
Output is correct |
| 77 |
Correct |
170 ms |
24956 KB |
Output is correct |
| 78 |
Correct |
161 ms |
24940 KB |
Output is correct |
| 79 |
Correct |
163 ms |
24916 KB |
Output is correct |
| 80 |
Correct |
169 ms |
24828 KB |
Output is correct |
| 81 |
Correct |
118 ms |
23332 KB |
Output is correct |
| 82 |
Correct |
153 ms |
23860 KB |
Output is correct |
| 83 |
Correct |
183 ms |
29520 KB |
Output is correct |
| 84 |
Correct |
159 ms |
31712 KB |
Output is correct |
| 85 |
Correct |
183 ms |
31416 KB |
Output is correct |
| 86 |
Correct |
181 ms |
25360 KB |
Output is correct |
| 87 |
Correct |
163 ms |
24836 KB |
Output is correct |
| 88 |
Correct |
178 ms |
25264 KB |
Output is correct |
| 89 |
Correct |
135 ms |
25264 KB |
Output is correct |
| 90 |
Correct |
151 ms |
25024 KB |
Output is correct |
| 91 |
Correct |
141 ms |
25360 KB |
Output is correct |
| 92 |
Correct |
144 ms |
25588 KB |
Output is correct |
| 93 |
Correct |
159 ms |
28252 KB |
Output is correct |
| 94 |
Correct |
155 ms |
29472 KB |
Output is correct |
| 95 |
Correct |
133 ms |
28344 KB |
Output is correct |
| 96 |
Correct |
173 ms |
26556 KB |
Output is correct |
| 97 |
Correct |
136 ms |
25004 KB |
Output is correct |
| 98 |
Correct |
143 ms |
24616 KB |
Output is correct |
| 99 |
Correct |
170 ms |
24352 KB |
Output is correct |
| 100 |
Correct |
137 ms |
27332 KB |
Output is correct |
| 101 |
Correct |
140 ms |
25308 KB |
Output is correct |
| 102 |
Correct |
168 ms |
24724 KB |
Output is correct |
| 103 |
Correct |
141 ms |
24604 KB |
Output is correct |
| 104 |
Correct |
80 ms |
22564 KB |
Output is correct |
| 105 |
Correct |
173 ms |
35984 KB |
Output is correct |
| 106 |
Correct |
117 ms |
22396 KB |
Output is correct |
| 107 |
Correct |
88 ms |
22412 KB |
Output is correct |
| 108 |
Correct |
170 ms |
39980 KB |
Output is correct |
| 109 |
Correct |
119 ms |
22676 KB |
Output is correct |
| 110 |
Correct |
193 ms |
40328 KB |
Output is correct |
| 111 |
Correct |
150 ms |
22284 KB |
Output is correct |
