#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector<ll>;
using vvl = vector<vll>;
using vb = vector<bool>;
using pll = pair<ll,ll>;
using vpl = vector<pll>;
using vvp = vector<vpl>;
#define f first
#define s second
#define pb push_back
#define all(v) v.begin(),v.end()
vvl g;
vb gen;
vll dp0, dp1;
ll ans = 0;
void dfs(ll cur, ll par){
if(!gen[cur]){
for(ll i:g[cur]){
if(i==par)continue;
dfs(i, cur);
dp0[cur]+=dp0[i];
dp1[cur] = max(dp1[cur], dp1[i]);
}
}
else{
ll mx=0;
for(ll i:g[cur]){
if(i==par)continue;
dfs(i, cur);
dp0[cur]+=dp0[i];
dp1[cur] = max(dp1[cur], dp1[i]);
mx = max(mx, dp0[i]);
}
dp0[cur] = max(dp0[cur]-1, 1ll);
dp1[cur] = max(dp1[cur]-1, mx+1);
}
ans = max(ans, max(dp0[cur], dp1[cur]));
}
int main(){
ios_base::sync_with_stdio(0);cin.tie(NULL);
ll n, a, b; cin >> n;
g = vvl(n+1, vll());
gen = vb(n+1);
dp0=dp1=vll(n+1);
for(ll i = 0; i < n-1; ++i){
cin >> a >> b;
g[a].pb(b);
g[b].pb(a);
}
string s;
cin >> s;
for(ll i = 1; i <= n; ++i)if(s[i-1]=='1')gen[i]=1;
dfs(1,0);
cout << ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
456 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
456 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
604 KB |
Output is correct |
23 |
Correct |
1 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
604 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
1 ms |
604 KB |
Output is correct |
27 |
Correct |
1 ms |
604 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
1 ms |
604 KB |
Output is correct |
30 |
Correct |
1 ms |
600 KB |
Output is correct |
31 |
Correct |
1 ms |
604 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
1 ms |
604 KB |
Output is correct |
34 |
Correct |
1 ms |
604 KB |
Output is correct |
35 |
Correct |
1 ms |
604 KB |
Output is correct |
36 |
Correct |
1 ms |
616 KB |
Output is correct |
37 |
Correct |
1 ms |
604 KB |
Output is correct |
38 |
Correct |
1 ms |
604 KB |
Output is correct |
39 |
Correct |
1 ms |
604 KB |
Output is correct |
40 |
Correct |
1 ms |
604 KB |
Output is correct |
41 |
Correct |
1 ms |
604 KB |
Output is correct |
42 |
Correct |
1 ms |
604 KB |
Output is correct |
43 |
Correct |
1 ms |
604 KB |
Output is correct |
44 |
Correct |
1 ms |
468 KB |
Output is correct |
45 |
Correct |
1 ms |
604 KB |
Output is correct |
46 |
Correct |
1 ms |
604 KB |
Output is correct |
47 |
Correct |
1 ms |
604 KB |
Output is correct |
48 |
Correct |
1 ms |
624 KB |
Output is correct |
49 |
Correct |
1 ms |
600 KB |
Output is correct |
50 |
Correct |
1 ms |
604 KB |
Output is correct |
51 |
Correct |
1 ms |
604 KB |
Output is correct |
52 |
Correct |
1 ms |
604 KB |
Output is correct |
53 |
Correct |
1 ms |
600 KB |
Output is correct |
54 |
Correct |
1 ms |
600 KB |
Output is correct |
55 |
Correct |
1 ms |
604 KB |
Output is correct |
56 |
Correct |
0 ms |
604 KB |
Output is correct |
57 |
Correct |
1 ms |
604 KB |
Output is correct |
58 |
Correct |
0 ms |
604 KB |
Output is correct |
59 |
Correct |
1 ms |
600 KB |
Output is correct |
60 |
Correct |
1 ms |
604 KB |
Output is correct |
61 |
Correct |
1 ms |
604 KB |
Output is correct |
62 |
Correct |
1 ms |
604 KB |
Output is correct |
63 |
Correct |
1 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
0 ms |
456 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
604 KB |
Output is correct |
23 |
Correct |
1 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
604 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
1 ms |
604 KB |
Output is correct |
27 |
Correct |
1 ms |
604 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
1 ms |
604 KB |
Output is correct |
30 |
Correct |
1 ms |
600 KB |
Output is correct |
31 |
Correct |
1 ms |
604 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
1 ms |
604 KB |
Output is correct |
34 |
Correct |
1 ms |
604 KB |
Output is correct |
35 |
Correct |
1 ms |
604 KB |
Output is correct |
36 |
Correct |
1 ms |
616 KB |
Output is correct |
37 |
Correct |
1 ms |
604 KB |
Output is correct |
38 |
Correct |
1 ms |
604 KB |
Output is correct |
39 |
Correct |
1 ms |
604 KB |
Output is correct |
40 |
Correct |
1 ms |
604 KB |
Output is correct |
41 |
Correct |
1 ms |
604 KB |
Output is correct |
42 |
Correct |
1 ms |
604 KB |
Output is correct |
43 |
Correct |
1 ms |
604 KB |
Output is correct |
44 |
Correct |
1 ms |
468 KB |
Output is correct |
45 |
Correct |
1 ms |
604 KB |
Output is correct |
46 |
Correct |
1 ms |
604 KB |
Output is correct |
47 |
Correct |
1 ms |
604 KB |
Output is correct |
48 |
Correct |
1 ms |
624 KB |
Output is correct |
49 |
Correct |
1 ms |
600 KB |
Output is correct |
50 |
Correct |
1 ms |
604 KB |
Output is correct |
51 |
Correct |
1 ms |
604 KB |
Output is correct |
52 |
Correct |
1 ms |
604 KB |
Output is correct |
53 |
Correct |
1 ms |
600 KB |
Output is correct |
54 |
Correct |
1 ms |
600 KB |
Output is correct |
55 |
Correct |
1 ms |
604 KB |
Output is correct |
56 |
Correct |
0 ms |
604 KB |
Output is correct |
57 |
Correct |
1 ms |
604 KB |
Output is correct |
58 |
Correct |
0 ms |
604 KB |
Output is correct |
59 |
Correct |
1 ms |
600 KB |
Output is correct |
60 |
Correct |
1 ms |
604 KB |
Output is correct |
61 |
Correct |
1 ms |
604 KB |
Output is correct |
62 |
Correct |
1 ms |
604 KB |
Output is correct |
63 |
Correct |
1 ms |
604 KB |
Output is correct |
64 |
Correct |
62 ms |
18744 KB |
Output is correct |
65 |
Correct |
61 ms |
18736 KB |
Output is correct |
66 |
Correct |
54 ms |
18708 KB |
Output is correct |
67 |
Correct |
59 ms |
18676 KB |
Output is correct |
68 |
Correct |
56 ms |
18732 KB |
Output is correct |
69 |
Correct |
59 ms |
18740 KB |
Output is correct |
70 |
Correct |
68 ms |
18764 KB |
Output is correct |
71 |
Correct |
60 ms |
18684 KB |
Output is correct |
72 |
Correct |
57 ms |
18740 KB |
Output is correct |
73 |
Correct |
67 ms |
30100 KB |
Output is correct |
74 |
Correct |
74 ms |
30100 KB |
Output is correct |
75 |
Correct |
64 ms |
20020 KB |
Output is correct |
76 |
Correct |
61 ms |
20024 KB |
Output is correct |
77 |
Correct |
55 ms |
18736 KB |
Output is correct |
78 |
Correct |
54 ms |
18792 KB |
Output is correct |
79 |
Correct |
56 ms |
18748 KB |
Output is correct |
80 |
Correct |
57 ms |
18756 KB |
Output is correct |
81 |
Correct |
56 ms |
18632 KB |
Output is correct |
82 |
Correct |
67 ms |
18636 KB |
Output is correct |
83 |
Correct |
58 ms |
23764 KB |
Output is correct |
84 |
Correct |
66 ms |
25756 KB |
Output is correct |
85 |
Correct |
62 ms |
25500 KB |
Output is correct |
86 |
Correct |
62 ms |
19856 KB |
Output is correct |
87 |
Correct |
56 ms |
19396 KB |
Output is correct |
88 |
Correct |
68 ms |
19480 KB |
Output is correct |
89 |
Correct |
64 ms |
19364 KB |
Output is correct |
90 |
Correct |
58 ms |
19292 KB |
Output is correct |
91 |
Correct |
59 ms |
19576 KB |
Output is correct |
92 |
Correct |
64 ms |
19840 KB |
Output is correct |
93 |
Correct |
56 ms |
22180 KB |
Output is correct |
94 |
Correct |
80 ms |
23752 KB |
Output is correct |
95 |
Correct |
55 ms |
22556 KB |
Output is correct |
96 |
Correct |
71 ms |
20720 KB |
Output is correct |
97 |
Correct |
55 ms |
19180 KB |
Output is correct |
98 |
Correct |
56 ms |
18768 KB |
Output is correct |
99 |
Correct |
55 ms |
18736 KB |
Output is correct |
100 |
Correct |
64 ms |
21660 KB |
Output is correct |
101 |
Correct |
58 ms |
19468 KB |
Output is correct |
102 |
Correct |
62 ms |
18780 KB |
Output is correct |
103 |
Correct |
54 ms |
19008 KB |
Output is correct |
104 |
Correct |
41 ms |
19256 KB |
Output is correct |
105 |
Correct |
67 ms |
27024 KB |
Output is correct |
106 |
Correct |
40 ms |
19140 KB |
Output is correct |
107 |
Correct |
44 ms |
19136 KB |
Output is correct |
108 |
Correct |
72 ms |
31048 KB |
Output is correct |
109 |
Correct |
41 ms |
19368 KB |
Output is correct |
110 |
Correct |
67 ms |
31384 KB |
Output is correct |
111 |
Correct |
54 ms |
18748 KB |
Output is correct |