#include<bits/stdc++.h>
using namespace std;
int ans=1;
vector<int> res;
vector<vector<int>> adj;
string s;
void dfs(int u=0, int p=-1) {
int sum=0, mx=0, path=0;
for(int pp : adj[u]) {
if(pp==p) continue;
dfs(pp, u);
if(res[pp]>0) sum+=res[pp], mx=max(mx, res[pp]), path++;}
res[u]=sum;
if(path==0) {res[u]=s[u]-'0'; return;}
if(s[u]=='1') res[u]--, ans=max({ans, sum-2*(path>1)+1, mx+1});
else ans=max(ans, sum);
res[u]=max(1, res[u]);
}
int main() {
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int n; cin >> n;
res.resize(n); adj.resize(n);
while(--n) {
int u, v; cin >> u >> v; --u; --v;
adj[u].push_back(v);
adj[v].push_back(u);}
cin >> s;
dfs();
cout << ans << '\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
320 KB |
Output is correct |
11 |
Correct |
0 ms |
316 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
316 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
320 KB |
Output is correct |
11 |
Correct |
0 ms |
316 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
316 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
460 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
596 KB |
Output is correct |
30 |
Correct |
1 ms |
468 KB |
Output is correct |
31 |
Correct |
1 ms |
468 KB |
Output is correct |
32 |
Correct |
1 ms |
456 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
34 |
Correct |
1 ms |
340 KB |
Output is correct |
35 |
Correct |
1 ms |
340 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
37 |
Correct |
1 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
1 ms |
468 KB |
Output is correct |
40 |
Correct |
1 ms |
468 KB |
Output is correct |
41 |
Correct |
1 ms |
436 KB |
Output is correct |
42 |
Correct |
1 ms |
456 KB |
Output is correct |
43 |
Correct |
1 ms |
468 KB |
Output is correct |
44 |
Correct |
1 ms |
460 KB |
Output is correct |
45 |
Correct |
1 ms |
460 KB |
Output is correct |
46 |
Correct |
1 ms |
468 KB |
Output is correct |
47 |
Correct |
1 ms |
468 KB |
Output is correct |
48 |
Correct |
1 ms |
468 KB |
Output is correct |
49 |
Correct |
1 ms |
460 KB |
Output is correct |
50 |
Correct |
1 ms |
432 KB |
Output is correct |
51 |
Correct |
1 ms |
468 KB |
Output is correct |
52 |
Correct |
1 ms |
468 KB |
Output is correct |
53 |
Correct |
1 ms |
468 KB |
Output is correct |
54 |
Correct |
1 ms |
468 KB |
Output is correct |
55 |
Correct |
1 ms |
468 KB |
Output is correct |
56 |
Correct |
1 ms |
468 KB |
Output is correct |
57 |
Correct |
1 ms |
596 KB |
Output is correct |
58 |
Correct |
1 ms |
464 KB |
Output is correct |
59 |
Correct |
1 ms |
468 KB |
Output is correct |
60 |
Correct |
1 ms |
468 KB |
Output is correct |
61 |
Correct |
1 ms |
460 KB |
Output is correct |
62 |
Correct |
1 ms |
584 KB |
Output is correct |
63 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
320 KB |
Output is correct |
11 |
Correct |
0 ms |
316 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
0 ms |
212 KB |
Output is correct |
17 |
Correct |
1 ms |
212 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
340 KB |
Output is correct |
20 |
Correct |
1 ms |
316 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
1 ms |
340 KB |
Output is correct |
23 |
Correct |
1 ms |
340 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
1 ms |
460 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
340 KB |
Output is correct |
28 |
Correct |
1 ms |
340 KB |
Output is correct |
29 |
Correct |
1 ms |
596 KB |
Output is correct |
30 |
Correct |
1 ms |
468 KB |
Output is correct |
31 |
Correct |
1 ms |
468 KB |
Output is correct |
32 |
Correct |
1 ms |
456 KB |
Output is correct |
33 |
Correct |
1 ms |
340 KB |
Output is correct |
34 |
Correct |
1 ms |
340 KB |
Output is correct |
35 |
Correct |
1 ms |
340 KB |
Output is correct |
36 |
Correct |
1 ms |
340 KB |
Output is correct |
37 |
Correct |
1 ms |
340 KB |
Output is correct |
38 |
Correct |
1 ms |
340 KB |
Output is correct |
39 |
Correct |
1 ms |
468 KB |
Output is correct |
40 |
Correct |
1 ms |
468 KB |
Output is correct |
41 |
Correct |
1 ms |
436 KB |
Output is correct |
42 |
Correct |
1 ms |
456 KB |
Output is correct |
43 |
Correct |
1 ms |
468 KB |
Output is correct |
44 |
Correct |
1 ms |
460 KB |
Output is correct |
45 |
Correct |
1 ms |
460 KB |
Output is correct |
46 |
Correct |
1 ms |
468 KB |
Output is correct |
47 |
Correct |
1 ms |
468 KB |
Output is correct |
48 |
Correct |
1 ms |
468 KB |
Output is correct |
49 |
Correct |
1 ms |
460 KB |
Output is correct |
50 |
Correct |
1 ms |
432 KB |
Output is correct |
51 |
Correct |
1 ms |
468 KB |
Output is correct |
52 |
Correct |
1 ms |
468 KB |
Output is correct |
53 |
Correct |
1 ms |
468 KB |
Output is correct |
54 |
Correct |
1 ms |
468 KB |
Output is correct |
55 |
Correct |
1 ms |
468 KB |
Output is correct |
56 |
Correct |
1 ms |
468 KB |
Output is correct |
57 |
Correct |
1 ms |
596 KB |
Output is correct |
58 |
Correct |
1 ms |
464 KB |
Output is correct |
59 |
Correct |
1 ms |
468 KB |
Output is correct |
60 |
Correct |
1 ms |
468 KB |
Output is correct |
61 |
Correct |
1 ms |
460 KB |
Output is correct |
62 |
Correct |
1 ms |
584 KB |
Output is correct |
63 |
Correct |
1 ms |
340 KB |
Output is correct |
64 |
Correct |
66 ms |
15212 KB |
Output is correct |
65 |
Correct |
65 ms |
15208 KB |
Output is correct |
66 |
Correct |
113 ms |
15280 KB |
Output is correct |
67 |
Correct |
102 ms |
15284 KB |
Output is correct |
68 |
Correct |
76 ms |
15256 KB |
Output is correct |
69 |
Correct |
83 ms |
15204 KB |
Output is correct |
70 |
Correct |
78 ms |
15208 KB |
Output is correct |
71 |
Correct |
66 ms |
15184 KB |
Output is correct |
72 |
Correct |
74 ms |
15276 KB |
Output is correct |
73 |
Correct |
101 ms |
30240 KB |
Output is correct |
74 |
Correct |
102 ms |
30332 KB |
Output is correct |
75 |
Correct |
68 ms |
15116 KB |
Output is correct |
76 |
Correct |
65 ms |
15208 KB |
Output is correct |
77 |
Correct |
68 ms |
15172 KB |
Output is correct |
78 |
Correct |
70 ms |
15156 KB |
Output is correct |
79 |
Correct |
132 ms |
15148 KB |
Output is correct |
80 |
Correct |
65 ms |
15172 KB |
Output is correct |
81 |
Correct |
59 ms |
15432 KB |
Output is correct |
82 |
Correct |
62 ms |
15300 KB |
Output is correct |
83 |
Correct |
92 ms |
21228 KB |
Output is correct |
84 |
Correct |
87 ms |
23868 KB |
Output is correct |
85 |
Correct |
93 ms |
23624 KB |
Output is correct |
86 |
Correct |
130 ms |
16764 KB |
Output is correct |
87 |
Correct |
70 ms |
16024 KB |
Output is correct |
88 |
Correct |
65 ms |
16456 KB |
Output is correct |
89 |
Correct |
66 ms |
16536 KB |
Output is correct |
90 |
Correct |
134 ms |
16248 KB |
Output is correct |
91 |
Correct |
66 ms |
16492 KB |
Output is correct |
92 |
Correct |
63 ms |
16976 KB |
Output is correct |
93 |
Correct |
84 ms |
19852 KB |
Output is correct |
94 |
Correct |
101 ms |
21920 KB |
Output is correct |
95 |
Correct |
75 ms |
20272 KB |
Output is correct |
96 |
Correct |
64 ms |
18168 KB |
Output is correct |
97 |
Correct |
66 ms |
16356 KB |
Output is correct |
98 |
Correct |
100 ms |
15672 KB |
Output is correct |
99 |
Correct |
63 ms |
15616 KB |
Output is correct |
100 |
Correct |
68 ms |
19364 KB |
Output is correct |
101 |
Correct |
67 ms |
16880 KB |
Output is correct |
102 |
Correct |
60 ms |
15960 KB |
Output is correct |
103 |
Correct |
77 ms |
15788 KB |
Output is correct |
104 |
Correct |
54 ms |
16064 KB |
Output is correct |
105 |
Correct |
87 ms |
26516 KB |
Output is correct |
106 |
Correct |
45 ms |
15928 KB |
Output is correct |
107 |
Correct |
50 ms |
15936 KB |
Output is correct |
108 |
Correct |
107 ms |
31192 KB |
Output is correct |
109 |
Correct |
48 ms |
16064 KB |
Output is correct |
110 |
Correct |
99 ms |
31620 KB |
Output is correct |
111 |
Correct |
85 ms |
15156 KB |
Output is correct |