#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
#define FOR(i, x, y) for(ll i=x; i<y; i++)
#define FORNEG(i, x, y) for(ll i=x; i>y; i--)
#define fast() ios_base::sync_with_stdio(false);cin.tie(NULL)
ll n;
string sus;
vector<ll> edges[200001];
ll par[200001];
bool visited[200001];
ll dps[200001];
ll ans = 0;
void dfs(ll a){
for (auto&i : edges[a]){
if (!visited[i]){
visited[i] = true;
par[i] = a;
dfs(i);
}
}
}
ll dp(ll a){
if (dps[a] != -1) return dps[a];
ll sum = 0;
ll maxi = 0;
for (auto&i : edges[a]){
if (i==par[a]) continue;
sum += dp(i);
maxi = max(maxi, dp(i));
}
if (sus[a-1] == '1'){
ans = max(ans, max(maxi+1, sum-1));
}else{
ans = max(ans, sum);
}
dps[a] = max(sum - sus[a-1] + '0', ll(sus[a-1] - '0'));
return max(sum - sus[a-1] + '0', ll(sus[a-1] - '0'));
}
int main(){
cin >> n;
if (n==1){
cout << 1;
return 0;
}
FOR(i,0,n-1){
ll a,b;
cin >> a >> b;
edges[a].push_back(b);
edges[b].push_back(a);
}
cin >> sus;
FOR(i,0,n+1) par[i] = -1, visited[i] = 0, dps[i] = -1;
visited[1] = true;
dfs(1);
dp(1);
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 2 |
Correct |
3 ms |
5012 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4948 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
5 ms |
4968 KB |
Output is correct |
| 14 |
Correct |
4 ms |
5032 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4948 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 2 |
Correct |
3 ms |
5012 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4948 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
5 ms |
4968 KB |
Output is correct |
| 14 |
Correct |
4 ms |
5032 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 22 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 23 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 24 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 25 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 26 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 27 |
Correct |
6 ms |
5076 KB |
Output is correct |
| 28 |
Correct |
5 ms |
5148 KB |
Output is correct |
| 29 |
Correct |
6 ms |
5140 KB |
Output is correct |
| 30 |
Correct |
6 ms |
5204 KB |
Output is correct |
| 31 |
Correct |
6 ms |
5156 KB |
Output is correct |
| 32 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 35 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 36 |
Correct |
5 ms |
5092 KB |
Output is correct |
| 37 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 38 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 39 |
Correct |
5 ms |
5148 KB |
Output is correct |
| 40 |
Correct |
5 ms |
5164 KB |
Output is correct |
| 41 |
Correct |
6 ms |
5076 KB |
Output is correct |
| 42 |
Correct |
5 ms |
5144 KB |
Output is correct |
| 43 |
Correct |
5 ms |
5140 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 45 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 46 |
Correct |
4 ms |
5144 KB |
Output is correct |
| 47 |
Correct |
4 ms |
5144 KB |
Output is correct |
| 48 |
Correct |
5 ms |
5204 KB |
Output is correct |
| 49 |
Correct |
4 ms |
5204 KB |
Output is correct |
| 50 |
Correct |
4 ms |
5156 KB |
Output is correct |
| 51 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 52 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 53 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 54 |
Correct |
4 ms |
5148 KB |
Output is correct |
| 55 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 56 |
Correct |
4 ms |
5148 KB |
Output is correct |
| 57 |
Correct |
4 ms |
5148 KB |
Output is correct |
| 58 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 59 |
Correct |
6 ms |
5148 KB |
Output is correct |
| 60 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 61 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 62 |
Correct |
5 ms |
5144 KB |
Output is correct |
| 63 |
Correct |
4 ms |
5076 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 2 |
Correct |
3 ms |
5012 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 4 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4948 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
5 ms |
4968 KB |
Output is correct |
| 14 |
Correct |
4 ms |
5032 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
3 ms |
5004 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 22 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 23 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 24 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 25 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 26 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 27 |
Correct |
6 ms |
5076 KB |
Output is correct |
| 28 |
Correct |
5 ms |
5148 KB |
Output is correct |
| 29 |
Correct |
6 ms |
5140 KB |
Output is correct |
| 30 |
Correct |
6 ms |
5204 KB |
Output is correct |
| 31 |
Correct |
6 ms |
5156 KB |
Output is correct |
| 32 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 35 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 36 |
Correct |
5 ms |
5092 KB |
Output is correct |
| 37 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 38 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 39 |
Correct |
5 ms |
5148 KB |
Output is correct |
| 40 |
Correct |
5 ms |
5164 KB |
Output is correct |
| 41 |
Correct |
6 ms |
5076 KB |
Output is correct |
| 42 |
Correct |
5 ms |
5144 KB |
Output is correct |
| 43 |
Correct |
5 ms |
5140 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 45 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 46 |
Correct |
4 ms |
5144 KB |
Output is correct |
| 47 |
Correct |
4 ms |
5144 KB |
Output is correct |
| 48 |
Correct |
5 ms |
5204 KB |
Output is correct |
| 49 |
Correct |
4 ms |
5204 KB |
Output is correct |
| 50 |
Correct |
4 ms |
5156 KB |
Output is correct |
| 51 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 52 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 53 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 54 |
Correct |
4 ms |
5148 KB |
Output is correct |
| 55 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 56 |
Correct |
4 ms |
5148 KB |
Output is correct |
| 57 |
Correct |
4 ms |
5148 KB |
Output is correct |
| 58 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 59 |
Correct |
6 ms |
5148 KB |
Output is correct |
| 60 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 61 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 62 |
Correct |
5 ms |
5144 KB |
Output is correct |
| 63 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 64 |
Correct |
227 ms |
16896 KB |
Output is correct |
| 65 |
Correct |
246 ms |
16816 KB |
Output is correct |
| 66 |
Correct |
265 ms |
16908 KB |
Output is correct |
| 67 |
Correct |
269 ms |
16856 KB |
Output is correct |
| 68 |
Correct |
268 ms |
16824 KB |
Output is correct |
| 69 |
Correct |
258 ms |
16896 KB |
Output is correct |
| 70 |
Correct |
273 ms |
17500 KB |
Output is correct |
| 71 |
Correct |
232 ms |
16924 KB |
Output is correct |
| 72 |
Correct |
255 ms |
17000 KB |
Output is correct |
| 73 |
Correct |
291 ms |
25896 KB |
Output is correct |
| 74 |
Correct |
295 ms |
27828 KB |
Output is correct |
| 75 |
Correct |
255 ms |
19932 KB |
Output is correct |
| 76 |
Correct |
287 ms |
19912 KB |
Output is correct |
| 77 |
Correct |
243 ms |
18608 KB |
Output is correct |
| 78 |
Correct |
264 ms |
18772 KB |
Output is correct |
| 79 |
Correct |
278 ms |
18576 KB |
Output is correct |
| 80 |
Correct |
262 ms |
18676 KB |
Output is correct |
| 81 |
Correct |
267 ms |
18776 KB |
Output is correct |
| 82 |
Correct |
230 ms |
18708 KB |
Output is correct |
| 83 |
Correct |
280 ms |
22764 KB |
Output is correct |
| 84 |
Correct |
290 ms |
24408 KB |
Output is correct |
| 85 |
Correct |
292 ms |
24144 KB |
Output is correct |
| 86 |
Correct |
268 ms |
19688 KB |
Output is correct |
| 87 |
Correct |
307 ms |
19320 KB |
Output is correct |
| 88 |
Correct |
264 ms |
19372 KB |
Output is correct |
| 89 |
Correct |
256 ms |
19460 KB |
Output is correct |
| 90 |
Correct |
347 ms |
19204 KB |
Output is correct |
| 91 |
Correct |
264 ms |
19452 KB |
Output is correct |
| 92 |
Correct |
289 ms |
19744 KB |
Output is correct |
| 93 |
Correct |
214 ms |
21348 KB |
Output is correct |
| 94 |
Correct |
260 ms |
22716 KB |
Output is correct |
| 95 |
Correct |
242 ms |
21788 KB |
Output is correct |
| 96 |
Correct |
222 ms |
20308 KB |
Output is correct |
| 97 |
Correct |
232 ms |
19092 KB |
Output is correct |
| 98 |
Correct |
228 ms |
18852 KB |
Output is correct |
| 99 |
Correct |
273 ms |
18792 KB |
Output is correct |
| 100 |
Correct |
230 ms |
21044 KB |
Output is correct |
| 101 |
Correct |
234 ms |
19304 KB |
Output is correct |
| 102 |
Correct |
230 ms |
18912 KB |
Output is correct |
| 103 |
Correct |
238 ms |
18928 KB |
Output is correct |
| 104 |
Correct |
184 ms |
19384 KB |
Output is correct |
| 105 |
Correct |
254 ms |
25204 KB |
Output is correct |
| 106 |
Correct |
176 ms |
19132 KB |
Output is correct |
| 107 |
Correct |
188 ms |
19148 KB |
Output is correct |
| 108 |
Correct |
282 ms |
28392 KB |
Output is correct |
| 109 |
Correct |
193 ms |
19356 KB |
Output is correct |
| 110 |
Correct |
284 ms |
28648 KB |
Output is correct |
| 111 |
Correct |
211 ms |
18728 KB |
Output is correct |
