#include <iostream>
#include <vector>
using namespace std;
int f[200005][2], a[200005];
vector<int> g[200005];
void dfs(int x, int p) {
if (p != -1 && g[x].size() == 1) {
f[x][0] = f[x][1] = a[x];
return;
}
int c = 0, d = g[x].size() - (p != -1);
if (d > 1) d = 1;
else d = 0;
for (int w : g[x]) {
if (w == p) continue;
dfs(w, x);
c += f[w][1];
f[x][0] = max(f[x][0], f[w][0]);
f[x][0] = max(f[x][0], f[w][1] + a[x]);
}
f[x][1] = max(a[x], c - a[x]);
f[x][0] = max(f[x][0], c - a[x] * d);
//cout << x << " " << f[x][1] << " " << f[x][0] << '\n';
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int n;
cin >> n;
for (int i = 1; i < n; i++) {
int u, v;
cin >> u >> v;
g[u].push_back(v);
g[v].push_back(u);
}
string s;
cin >> s;
s = " " + s;
for (int i = 1; i <= n; i++) a[i] = (s[i] == '1');
dfs(1, -1);
cout << max(f[1][0], f[1][1]);
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 3 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 8 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 15 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 17 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4952 KB |
Output is correct |
| 21 |
Correct |
2 ms |
4952 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 3 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 8 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 15 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 17 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4952 KB |
Output is correct |
| 21 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 22 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 23 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 24 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 25 |
Correct |
2 ms |
5196 KB |
Output is correct |
| 26 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 27 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 28 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 29 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 30 |
Correct |
2 ms |
5208 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 32 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 33 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 34 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 35 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 36 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 37 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 38 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 39 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 40 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 41 |
Correct |
2 ms |
5340 KB |
Output is correct |
| 42 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 43 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 44 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 45 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 46 |
Correct |
3 ms |
5208 KB |
Output is correct |
| 47 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 48 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 49 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 50 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 51 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 52 |
Correct |
2 ms |
5208 KB |
Output is correct |
| 53 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 54 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 55 |
Correct |
3 ms |
5208 KB |
Output is correct |
| 56 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 57 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 58 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 59 |
Correct |
2 ms |
5260 KB |
Output is correct |
| 60 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 61 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 62 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 63 |
Correct |
3 ms |
5208 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 3 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 8 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 15 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 17 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4952 KB |
Output is correct |
| 21 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 22 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 23 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 24 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 25 |
Correct |
2 ms |
5196 KB |
Output is correct |
| 26 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 27 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 28 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 29 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 30 |
Correct |
2 ms |
5208 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 32 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 33 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 34 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 35 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 36 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 37 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 38 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 39 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 40 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 41 |
Correct |
2 ms |
5340 KB |
Output is correct |
| 42 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 43 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 44 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 45 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 46 |
Correct |
3 ms |
5208 KB |
Output is correct |
| 47 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 48 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 49 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 50 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 51 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 52 |
Correct |
2 ms |
5208 KB |
Output is correct |
| 53 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 54 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 55 |
Correct |
3 ms |
5208 KB |
Output is correct |
| 56 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 57 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 58 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 59 |
Correct |
2 ms |
5260 KB |
Output is correct |
| 60 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 61 |
Correct |
2 ms |
5212 KB |
Output is correct |
| 62 |
Correct |
3 ms |
5212 KB |
Output is correct |
| 63 |
Correct |
3 ms |
5208 KB |
Output is correct |
| 64 |
Correct |
68 ms |
14292 KB |
Output is correct |
| 65 |
Correct |
59 ms |
16844 KB |
Output is correct |
| 66 |
Correct |
57 ms |
16908 KB |
Output is correct |
| 67 |
Correct |
57 ms |
16848 KB |
Output is correct |
| 68 |
Correct |
64 ms |
16828 KB |
Output is correct |
| 69 |
Correct |
65 ms |
16844 KB |
Output is correct |
| 70 |
Correct |
59 ms |
16864 KB |
Output is correct |
| 71 |
Correct |
57 ms |
16796 KB |
Output is correct |
| 72 |
Correct |
71 ms |
16840 KB |
Output is correct |
| 73 |
Correct |
76 ms |
31948 KB |
Output is correct |
| 74 |
Correct |
74 ms |
31948 KB |
Output is correct |
| 75 |
Correct |
55 ms |
16588 KB |
Output is correct |
| 76 |
Correct |
55 ms |
16600 KB |
Output is correct |
| 77 |
Correct |
58 ms |
16732 KB |
Output is correct |
| 78 |
Correct |
61 ms |
16592 KB |
Output is correct |
| 79 |
Correct |
56 ms |
16712 KB |
Output is correct |
| 80 |
Correct |
61 ms |
16588 KB |
Output is correct |
| 81 |
Correct |
54 ms |
17236 KB |
Output is correct |
| 82 |
Correct |
62 ms |
16780 KB |
Output is correct |
| 83 |
Correct |
83 ms |
22988 KB |
Output is correct |
| 84 |
Correct |
67 ms |
25564 KB |
Output is correct |
| 85 |
Correct |
70 ms |
25052 KB |
Output is correct |
| 86 |
Correct |
59 ms |
18380 KB |
Output is correct |
| 87 |
Correct |
58 ms |
17628 KB |
Output is correct |
| 88 |
Correct |
57 ms |
18172 KB |
Output is correct |
| 89 |
Correct |
84 ms |
18108 KB |
Output is correct |
| 90 |
Correct |
66 ms |
17792 KB |
Output is correct |
| 91 |
Correct |
57 ms |
18280 KB |
Output is correct |
| 92 |
Correct |
62 ms |
18616 KB |
Output is correct |
| 93 |
Correct |
56 ms |
21408 KB |
Output is correct |
| 94 |
Correct |
56 ms |
23496 KB |
Output is correct |
| 95 |
Correct |
65 ms |
21896 KB |
Output is correct |
| 96 |
Correct |
55 ms |
19772 KB |
Output is correct |
| 97 |
Correct |
59 ms |
17956 KB |
Output is correct |
| 98 |
Correct |
58 ms |
17404 KB |
Output is correct |
| 99 |
Correct |
60 ms |
17100 KB |
Output is correct |
| 100 |
Correct |
72 ms |
20980 KB |
Output is correct |
| 101 |
Correct |
56 ms |
18616 KB |
Output is correct |
| 102 |
Correct |
51 ms |
17568 KB |
Output is correct |
| 103 |
Correct |
56 ms |
17348 KB |
Output is correct |
| 104 |
Correct |
40 ms |
17608 KB |
Output is correct |
| 105 |
Correct |
68 ms |
28112 KB |
Output is correct |
| 106 |
Correct |
45 ms |
17604 KB |
Output is correct |
| 107 |
Correct |
40 ms |
17484 KB |
Output is correct |
| 108 |
Correct |
69 ms |
32716 KB |
Output is correct |
| 109 |
Correct |
46 ms |
17604 KB |
Output is correct |
| 110 |
Correct |
74 ms |
33168 KB |
Output is correct |
| 111 |
Correct |
54 ms |
16604 KB |
Output is correct |
