#include<bits/stdc++.h>
using namespace std;
const int maxn = 2e5 + 5;
int t, dp[maxn], n, ans;
vector<int> V[maxn];
string s;
void dfs(int u,int p) {
int m = 0, all = 0;
for(int i = 0; i < V[u].size(); i++) {
if(V[u][i] == p) continue;
dfs(V[u][i], u);
all += dp[V[u][i]];
m = max(m, dp[V[u][i]]);
}
dp[u] = max(m - (s[u] == '1'), 0 + (s[u] == '1'));
dp[u] = max(dp[u], all - (s[u] == '1'));
ans = max(ans, m + (s[u] == '1')); ans = max(ans, dp[u]);
}
main(){
cin >> n;
for(int i = 2; i <= n; i++) {
int u,v;
cin >> u >> v;
V[u].push_back(v); V[v].push_back(u);
}
cin >> s; s = '#' + s;
dfs(1, 0);
cout << max(ans, dp[1]);
}
Compilation message
power.cpp: In function 'void dfs(int, int)':
power.cpp:9:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | for(int i = 0; i < V[u].size(); i++) {
| ~~^~~~~~~~~~~~~
power.cpp: At global scope:
power.cpp:19:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
19 | main(){
| ^~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 2 |
Correct |
2 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 |
4 ms |
4996 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5000 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 |
4940 KB |
Output is correct |
| 13 |
Correct |
4 ms |
4996 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4996 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 18 |
Correct |
4 ms |
5000 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4996 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 |
2 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 |
4 ms |
4996 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5000 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 |
4940 KB |
Output is correct |
| 13 |
Correct |
4 ms |
4996 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4996 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 18 |
Correct |
4 ms |
5000 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4996 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 22 |
Correct |
5 ms |
4984 KB |
Output is correct |
| 23 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 24 |
Correct |
4 ms |
5040 KB |
Output is correct |
| 25 |
Correct |
5 ms |
5060 KB |
Output is correct |
| 26 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 27 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 28 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 29 |
Correct |
4 ms |
5172 KB |
Output is correct |
| 30 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 31 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 32 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 35 |
Correct |
5 ms |
5008 KB |
Output is correct |
| 36 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 37 |
Correct |
5 ms |
4996 KB |
Output is correct |
| 38 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 39 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 40 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 41 |
Correct |
4 ms |
5136 KB |
Output is correct |
| 42 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 43 |
Correct |
4 ms |
5032 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5004 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 |
4988 KB |
Output is correct |
| 48 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 49 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 50 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 51 |
Correct |
5 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 |
6 ms |
5108 KB |
Output is correct |
| 55 |
Correct |
4 ms |
5004 KB |
Output is correct |
| 56 |
Correct |
5 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 |
5004 KB |
Output is correct |
| 60 |
Correct |
4 ms |
5136 KB |
Output is correct |
| 61 |
Correct |
4 ms |
5004 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 |
2 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 |
4 ms |
4996 KB |
Output is correct |
| 7 |
Correct |
3 ms |
5000 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 |
4940 KB |
Output is correct |
| 13 |
Correct |
4 ms |
4996 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4996 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 18 |
Correct |
4 ms |
5000 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4996 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4940 KB |
Output is correct |
| 22 |
Correct |
5 ms |
4984 KB |
Output is correct |
| 23 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 24 |
Correct |
4 ms |
5040 KB |
Output is correct |
| 25 |
Correct |
5 ms |
5060 KB |
Output is correct |
| 26 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 27 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 28 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 29 |
Correct |
4 ms |
5172 KB |
Output is correct |
| 30 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 31 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 32 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 34 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 35 |
Correct |
5 ms |
5008 KB |
Output is correct |
| 36 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 37 |
Correct |
5 ms |
4996 KB |
Output is correct |
| 38 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 39 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 40 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 41 |
Correct |
4 ms |
5136 KB |
Output is correct |
| 42 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 43 |
Correct |
4 ms |
5032 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5004 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 |
4988 KB |
Output is correct |
| 48 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 49 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 50 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 51 |
Correct |
5 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 |
6 ms |
5108 KB |
Output is correct |
| 55 |
Correct |
4 ms |
5004 KB |
Output is correct |
| 56 |
Correct |
5 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 |
5004 KB |
Output is correct |
| 60 |
Correct |
4 ms |
5136 KB |
Output is correct |
| 61 |
Correct |
4 ms |
5004 KB |
Output is correct |
| 62 |
Correct |
4 ms |
5196 KB |
Output is correct |
| 63 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 64 |
Correct |
212 ms |
15256 KB |
Output is correct |
| 65 |
Correct |
214 ms |
15124 KB |
Output is correct |
| 66 |
Correct |
197 ms |
15244 KB |
Output is correct |
| 67 |
Correct |
228 ms |
15244 KB |
Output is correct |
| 68 |
Correct |
212 ms |
15124 KB |
Output is correct |
| 69 |
Correct |
223 ms |
15324 KB |
Output is correct |
| 70 |
Correct |
227 ms |
15068 KB |
Output is correct |
| 71 |
Correct |
244 ms |
15072 KB |
Output is correct |
| 72 |
Correct |
194 ms |
15072 KB |
Output is correct |
| 73 |
Correct |
236 ms |
27892 KB |
Output is correct |
| 74 |
Correct |
243 ms |
27708 KB |
Output is correct |
| 75 |
Correct |
211 ms |
14988 KB |
Output is correct |
| 76 |
Correct |
215 ms |
15036 KB |
Output is correct |
| 77 |
Correct |
216 ms |
14960 KB |
Output is correct |
| 78 |
Correct |
218 ms |
15064 KB |
Output is correct |
| 79 |
Correct |
261 ms |
14976 KB |
Output is correct |
| 80 |
Correct |
210 ms |
15040 KB |
Output is correct |
| 81 |
Correct |
187 ms |
15704 KB |
Output is correct |
| 82 |
Correct |
200 ms |
15168 KB |
Output is correct |
| 83 |
Correct |
250 ms |
20232 KB |
Output is correct |
| 84 |
Correct |
222 ms |
22348 KB |
Output is correct |
| 85 |
Correct |
231 ms |
22064 KB |
Output is correct |
| 86 |
Correct |
284 ms |
16520 KB |
Output is correct |
| 87 |
Correct |
238 ms |
16060 KB |
Output is correct |
| 88 |
Correct |
248 ms |
16380 KB |
Output is correct |
| 89 |
Correct |
191 ms |
16324 KB |
Output is correct |
| 90 |
Correct |
252 ms |
16092 KB |
Output is correct |
| 91 |
Correct |
206 ms |
16412 KB |
Output is correct |
| 92 |
Correct |
205 ms |
16680 KB |
Output is correct |
| 93 |
Correct |
238 ms |
19008 KB |
Output is correct |
| 94 |
Correct |
204 ms |
20876 KB |
Output is correct |
| 95 |
Correct |
260 ms |
19424 KB |
Output is correct |
| 96 |
Correct |
236 ms |
17760 KB |
Output is correct |
| 97 |
Correct |
204 ms |
16168 KB |
Output is correct |
| 98 |
Correct |
212 ms |
15652 KB |
Output is correct |
| 99 |
Correct |
204 ms |
15384 KB |
Output is correct |
| 100 |
Correct |
214 ms |
18780 KB |
Output is correct |
| 101 |
Correct |
198 ms |
16704 KB |
Output is correct |
| 102 |
Correct |
233 ms |
15996 KB |
Output is correct |
| 103 |
Correct |
214 ms |
15668 KB |
Output is correct |
| 104 |
Correct |
195 ms |
16012 KB |
Output is correct |
| 105 |
Correct |
258 ms |
24564 KB |
Output is correct |
| 106 |
Correct |
155 ms |
15756 KB |
Output is correct |
| 107 |
Correct |
147 ms |
15936 KB |
Output is correct |
| 108 |
Correct |
247 ms |
28520 KB |
Output is correct |
| 109 |
Correct |
170 ms |
16052 KB |
Output is correct |
| 110 |
Correct |
246 ms |
28860 KB |
Output is correct |
| 111 |
Correct |
242 ms |
14944 KB |
Output is correct |
