#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
int n;
int cnt;
string s;
vector<int> adj[200005];
bool pw[200005];
int dp[200005][2];
void dfs(int v, int p = -1) {
if (s[v] == '1') dp[v][0] = 1;
int tot = 0, mx = 0;
for (int u : adj[v]) {
if (u == p) continue;
dfs(u, v);
tot += dp[u][0];
mx = max(mx, dp[u][0]);
}
dp[v][0] = max(tot - dp[v][0], dp[v][0]);
if (s[v] == '1') dp[v][1] = mx + 1;
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n;
for (int i = 1; i < n; i++) {
int u, v; cin >> u >> v;
u--; v--;
adj[u].push_back(v);
adj[v].push_back(u);
}
cin >> s;
for (int i = 0; i < n; i++) {
if (s[i] == '1') cnt++;
}
int ans = 0;
dfs(0);
for (int i = 0; i < n; i++) {
ans = max({ans, dp[i][0], dp[i][1]});
}
cout << ans << '\n';
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 12 |
Correct |
3 ms |
5056 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 15 |
Correct |
4 ms |
4960 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4940 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 12 |
Correct |
3 ms |
5056 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 15 |
Correct |
4 ms |
4960 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 22 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 23 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 24 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 25 |
Correct |
4 ms |
5108 KB |
Output is correct |
| 26 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 27 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 28 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 29 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 30 |
Correct |
4 ms |
5084 KB |
Output is correct |
| 31 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 32 |
Correct |
4 ms |
5084 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 35 |
Correct |
4 ms |
5080 KB |
Output is correct |
| 36 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 37 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 38 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 39 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 40 |
Correct |
4 ms |
5156 KB |
Output is correct |
| 41 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 42 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 43 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 45 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 46 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 47 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 48 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 49 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 50 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 51 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 52 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 53 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 54 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 55 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 56 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 57 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 58 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 59 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 60 |
Correct |
4 ms |
5168 KB |
Output is correct |
| 61 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 62 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 63 |
Correct |
4 ms |
5068 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 12 |
Correct |
3 ms |
5056 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 15 |
Correct |
4 ms |
4960 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 22 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 23 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 24 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 25 |
Correct |
4 ms |
5108 KB |
Output is correct |
| 26 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 27 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 28 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 29 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 30 |
Correct |
4 ms |
5084 KB |
Output is correct |
| 31 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 32 |
Correct |
4 ms |
5084 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 35 |
Correct |
4 ms |
5080 KB |
Output is correct |
| 36 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 37 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 38 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 39 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 40 |
Correct |
4 ms |
5156 KB |
Output is correct |
| 41 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 42 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 43 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 45 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 46 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 47 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 48 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 49 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 50 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 51 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 52 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 53 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 54 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 55 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 56 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 57 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 58 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 59 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 60 |
Correct |
4 ms |
5168 KB |
Output is correct |
| 61 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 62 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 63 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 64 |
Correct |
148 ms |
18444 KB |
Output is correct |
| 65 |
Correct |
142 ms |
18528 KB |
Output is correct |
| 66 |
Correct |
143 ms |
18540 KB |
Output is correct |
| 67 |
Correct |
158 ms |
18432 KB |
Output is correct |
| 68 |
Correct |
147 ms |
18508 KB |
Output is correct |
| 69 |
Correct |
141 ms |
18548 KB |
Output is correct |
| 70 |
Correct |
145 ms |
18428 KB |
Output is correct |
| 71 |
Correct |
145 ms |
18440 KB |
Output is correct |
| 72 |
Correct |
147 ms |
18532 KB |
Output is correct |
| 73 |
Correct |
153 ms |
30152 KB |
Output is correct |
| 74 |
Correct |
157 ms |
30092 KB |
Output is correct |
| 75 |
Correct |
157 ms |
19748 KB |
Output is correct |
| 76 |
Correct |
149 ms |
19660 KB |
Output is correct |
| 77 |
Correct |
149 ms |
18448 KB |
Output is correct |
| 78 |
Correct |
146 ms |
18432 KB |
Output is correct |
| 79 |
Correct |
147 ms |
18408 KB |
Output is correct |
| 80 |
Correct |
149 ms |
18524 KB |
Output is correct |
| 81 |
Correct |
132 ms |
18536 KB |
Output is correct |
| 82 |
Correct |
143 ms |
18532 KB |
Output is correct |
| 83 |
Correct |
171 ms |
23512 KB |
Output is correct |
| 84 |
Correct |
157 ms |
25768 KB |
Output is correct |
| 85 |
Correct |
153 ms |
25324 KB |
Output is correct |
| 86 |
Correct |
169 ms |
19772 KB |
Output is correct |
| 87 |
Correct |
145 ms |
19264 KB |
Output is correct |
| 88 |
Correct |
139 ms |
19404 KB |
Output is correct |
| 89 |
Correct |
138 ms |
19396 KB |
Output is correct |
| 90 |
Correct |
131 ms |
19164 KB |
Output is correct |
| 91 |
Correct |
135 ms |
19432 KB |
Output is correct |
| 92 |
Correct |
152 ms |
19704 KB |
Output is correct |
| 93 |
Correct |
211 ms |
21932 KB |
Output is correct |
| 94 |
Correct |
134 ms |
23604 KB |
Output is correct |
| 95 |
Correct |
131 ms |
22324 KB |
Output is correct |
| 96 |
Correct |
166 ms |
20464 KB |
Output is correct |
| 97 |
Correct |
144 ms |
19024 KB |
Output is correct |
| 98 |
Correct |
131 ms |
18760 KB |
Output is correct |
| 99 |
Correct |
151 ms |
18544 KB |
Output is correct |
| 100 |
Correct |
140 ms |
21452 KB |
Output is correct |
| 101 |
Correct |
132 ms |
19420 KB |
Output is correct |
| 102 |
Correct |
129 ms |
18768 KB |
Output is correct |
| 103 |
Correct |
138 ms |
18796 KB |
Output is correct |
| 104 |
Correct |
101 ms |
19156 KB |
Output is correct |
| 105 |
Correct |
157 ms |
26952 KB |
Output is correct |
| 106 |
Correct |
119 ms |
19060 KB |
Output is correct |
| 107 |
Correct |
108 ms |
19040 KB |
Output is correct |
| 108 |
Correct |
154 ms |
31108 KB |
Output is correct |
| 109 |
Correct |
96 ms |
19192 KB |
Output is correct |
| 110 |
Correct |
156 ms |
31272 KB |
Output is correct |
| 111 |
Correct |
130 ms |
18452 KB |
Output is correct |
