#include <bits/stdc++.h>
using namespace std;
// Write down the limits of the problem here
const int NM = 2e5+5;
vector<int> G[NM];
int is_power_gen[NM];
int dp[NM];
int res = 0;
void dfs(int v, int p){
int best_subtree = 0;
for (int u : G[v]){
if (u == p) continue;
dfs(u, v);
best_subtree = max(best_subtree, dp[u]);
dp[v] += dp[u];
}
if (is_power_gen[v]){
res = max(res, best_subtree + 1);
dp[v] = max(1, dp[v] - 1);
}
res = max(res, dp[v]);
}
int main() {
// Try to avoid cin, cout :)
int tc = 1; // scanf("%d", &tc);
while(tc--) {
/// Your solution here
int n;
scanf("%d", &n);
for (int i = 0; i < n - 1; i++){
int x, y;
scanf("%d%d", &x, &y);
G[x].push_back(y);
G[y].push_back(x);
}
for (int i = 1; i <= n; i++){
char c;
do { c = getchar(); } while (isspace(c));
is_power_gen[i] = (c == '1');
}
dfs(1, -1);
printf("%d", res);
}
return 0;
}
/*
* Ermm don't underestimate Div2A, pls...
*
* If there isn't a clear-cut approach for your program, DO NOT CODE YET!
*
* Write down some notes for more complicated problems
*
* Also, please, CP isn't supposed to be complicated
*
**/
Compilation message
power.cpp: In function 'int main()':
power.cpp:33:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
33 | scanf("%d", &n);
| ~~~~~^~~~~~~~~~
power.cpp:36:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
36 | scanf("%d%d", &x, &y);
| ~~~~~^~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 3 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 8 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 10 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 15 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 17 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 21 |
Correct |
2 ms |
4948 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 3 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 8 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 10 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 15 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 17 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 21 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 22 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 23 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 24 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 25 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 26 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 27 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 28 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 29 |
Correct |
3 ms |
5204 KB |
Output is correct |
| 30 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 32 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 33 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 34 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 35 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 36 |
Correct |
3 ms |
5092 KB |
Output is correct |
| 37 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 38 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 39 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 40 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 41 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 42 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 43 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 44 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 45 |
Correct |
3 ms |
5064 KB |
Output is correct |
| 46 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 47 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 48 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 49 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 50 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 51 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 52 |
Correct |
2 ms |
5076 KB |
Output is correct |
| 53 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 54 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 55 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 56 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 57 |
Correct |
3 ms |
5204 KB |
Output is correct |
| 58 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 59 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 60 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 61 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 62 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 63 |
Correct |
3 ms |
5076 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 3 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 6 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 8 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 9 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 10 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4948 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 15 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 16 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 17 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 18 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 20 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 21 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 22 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 23 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 24 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 25 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 26 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 27 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 28 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 29 |
Correct |
3 ms |
5204 KB |
Output is correct |
| 30 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 31 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 32 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 33 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 34 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 35 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 36 |
Correct |
3 ms |
5092 KB |
Output is correct |
| 37 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 38 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 39 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 40 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 41 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 42 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 43 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 44 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 45 |
Correct |
3 ms |
5064 KB |
Output is correct |
| 46 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 47 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 48 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 49 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 50 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 51 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 52 |
Correct |
2 ms |
5076 KB |
Output is correct |
| 53 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 54 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 55 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 56 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 57 |
Correct |
3 ms |
5204 KB |
Output is correct |
| 58 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 59 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 60 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 61 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 62 |
Correct |
4 ms |
5076 KB |
Output is correct |
| 63 |
Correct |
3 ms |
5076 KB |
Output is correct |
| 64 |
Correct |
70 ms |
12836 KB |
Output is correct |
| 65 |
Correct |
75 ms |
12880 KB |
Output is correct |
| 66 |
Correct |
73 ms |
12924 KB |
Output is correct |
| 67 |
Correct |
72 ms |
12868 KB |
Output is correct |
| 68 |
Correct |
83 ms |
12876 KB |
Output is correct |
| 69 |
Correct |
119 ms |
12876 KB |
Output is correct |
| 70 |
Correct |
71 ms |
12908 KB |
Output is correct |
| 71 |
Correct |
73 ms |
12864 KB |
Output is correct |
| 72 |
Correct |
79 ms |
12832 KB |
Output is correct |
| 73 |
Correct |
93 ms |
25444 KB |
Output is correct |
| 74 |
Correct |
111 ms |
25596 KB |
Output is correct |
| 75 |
Correct |
76 ms |
12804 KB |
Output is correct |
| 76 |
Correct |
108 ms |
12792 KB |
Output is correct |
| 77 |
Correct |
71 ms |
12724 KB |
Output is correct |
| 78 |
Correct |
72 ms |
12748 KB |
Output is correct |
| 79 |
Correct |
75 ms |
12756 KB |
Output is correct |
| 80 |
Correct |
89 ms |
13008 KB |
Output is correct |
| 81 |
Correct |
63 ms |
13108 KB |
Output is correct |
| 82 |
Correct |
65 ms |
13028 KB |
Output is correct |
| 83 |
Correct |
116 ms |
18004 KB |
Output is correct |
| 84 |
Correct |
86 ms |
20068 KB |
Output is correct |
| 85 |
Correct |
131 ms |
19744 KB |
Output is correct |
| 86 |
Correct |
80 ms |
14156 KB |
Output is correct |
| 87 |
Correct |
90 ms |
13648 KB |
Output is correct |
| 88 |
Correct |
87 ms |
14132 KB |
Output is correct |
| 89 |
Correct |
72 ms |
14160 KB |
Output is correct |
| 90 |
Correct |
73 ms |
13896 KB |
Output is correct |
| 91 |
Correct |
90 ms |
14084 KB |
Output is correct |
| 92 |
Correct |
84 ms |
14492 KB |
Output is correct |
| 93 |
Correct |
75 ms |
16968 KB |
Output is correct |
| 94 |
Correct |
91 ms |
18644 KB |
Output is correct |
| 95 |
Correct |
79 ms |
17196 KB |
Output is correct |
| 96 |
Correct |
93 ms |
15488 KB |
Output is correct |
| 97 |
Correct |
68 ms |
13968 KB |
Output is correct |
| 98 |
Correct |
69 ms |
13468 KB |
Output is correct |
| 99 |
Correct |
70 ms |
13236 KB |
Output is correct |
| 100 |
Correct |
76 ms |
16412 KB |
Output is correct |
| 101 |
Correct |
78 ms |
14420 KB |
Output is correct |
| 102 |
Correct |
90 ms |
13672 KB |
Output is correct |
| 103 |
Correct |
74 ms |
13388 KB |
Output is correct |
| 104 |
Correct |
51 ms |
12792 KB |
Output is correct |
| 105 |
Correct |
89 ms |
22272 KB |
Output is correct |
| 106 |
Correct |
51 ms |
13576 KB |
Output is correct |
| 107 |
Correct |
49 ms |
13600 KB |
Output is correct |
| 108 |
Correct |
114 ms |
26220 KB |
Output is correct |
| 109 |
Correct |
53 ms |
12748 KB |
Output is correct |
| 110 |
Correct |
93 ms |
26524 KB |
Output is correct |
| 111 |
Correct |
83 ms |
12696 KB |
Output is correct |
