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Submission #864327

# Submission time Handle Problem Language Result Execution time Memory
864327 2023-10-22T12:51:54 Z epicci23 Power Plant (JOI20_power) C++17
100 / 100
 127 ms 29648 KB 
#include "bits/stdc++.h"
using namespace std;
#define pb push_back
#define endl "\n" 
#define int long long
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(),(x).end()

const int N = 2e5 + 5;

vector<int> v[N];
string s;
int dp[N];
int ans;
void dfs(int c,int p){
  int cur=0,sum=0;
  for(int x:v[c]){
    if(x==p) continue;
    dfs(x,c);
    cur=max(cur,dp[x]);
    sum+=dp[x];
  }

  if(s[c]=='1'){
  	ans=max(ans,sum-1);
  	ans=max(ans,cur+1);
  	ans=max(ans,1LL);
  }
  else ans=max(ans,sum);
  
  if(s[c]=='1') dp[c]=max(1LL,sum-1);
  else dp[c]=sum;
}

void solve(){
  int n;
  cin >> n;
  
  for(int i=1;i<n;i++){
    int a,b;
    cin >> a >> b;
    v[a].pb(b);
    v[b].pb(a);
  }
  
  cin >> s;
  s = " " + s;
  
  dfs(1,0);
  
  cout << ans << endl;
}

int32_t main(){

  cin.tie(0); ios::sync_with_stdio(0);
  
  int t=1;//cin >> t;
  while(t--) solve();

  return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6548 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6548 KB Output is correct
5 Correct 2 ms 6488 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 3 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 3 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6744 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6544 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6548 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6548 KB Output is correct
5 Correct 2 ms 6488 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 3 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 3 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6744 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6544 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6488 KB Output is correct
24 Correct 2 ms 6664 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct
29 Correct 2 ms 6748 KB Output is correct
30 Correct 3 ms 6488 KB Output is correct
31 Correct 2 ms 6492 KB Output is correct
32 Correct 2 ms 6492 KB Output is correct
33 Correct 2 ms 6492 KB Output is correct
34 Correct 2 ms 6492 KB Output is correct
35 Correct 3 ms 6492 KB Output is correct
36 Correct 2 ms 6492 KB Output is correct
37 Correct 3 ms 6492 KB Output is correct
38 Correct 2 ms 6492 KB Output is correct
39 Correct 2 ms 6708 KB Output is correct
40 Correct 2 ms 6488 KB Output is correct
41 Correct 2 ms 6492 KB Output is correct
42 Correct 2 ms 6492 KB Output is correct
43 Correct 2 ms 6492 KB Output is correct
44 Correct 2 ms 6492 KB Output is correct
45 Correct 2 ms 6488 KB Output is correct
46 Correct 2 ms 6492 KB Output is correct
47 Correct 2 ms 6492 KB Output is correct
48 Correct 2 ms 6492 KB Output is correct
49 Correct 2 ms 6556 KB Output is correct
50 Correct 2 ms 6492 KB Output is correct
51 Correct 2 ms 6492 KB Output is correct
52 Correct 2 ms 6492 KB Output is correct
53 Correct 2 ms 6492 KB Output is correct
54 Correct 2 ms 6492 KB Output is correct
55 Correct 2 ms 6560 KB Output is correct
56 Correct 2 ms 6492 KB Output is correct
57 Correct 2 ms 6744 KB Output is correct
58 Correct 2 ms 6492 KB Output is correct
59 Correct 2 ms 6492 KB Output is correct
60 Correct 2 ms 6740 KB Output is correct
61 Correct 2 ms 6644 KB Output is correct
62 Correct 2 ms 6748 KB Output is correct
63 Correct 2 ms 6492 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6548 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6548 KB Output is correct
5 Correct 2 ms 6488 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 3 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 3 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6744 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6492 KB Output is correct
20 Correct 2 ms 6544 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6488 KB Output is correct
24 Correct 2 ms 6664 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct
29 Correct 2 ms 6748 KB Output is correct
30 Correct 3 ms 6488 KB Output is correct
31 Correct 2 ms 6492 KB Output is correct
32 Correct 2 ms 6492 KB Output is correct
33 Correct 2 ms 6492 KB Output is correct
34 Correct 2 ms 6492 KB Output is correct
35 Correct 3 ms 6492 KB Output is correct
36 Correct 2 ms 6492 KB Output is correct
37 Correct 3 ms 6492 KB Output is correct
38 Correct 2 ms 6492 KB Output is correct
39 Correct 2 ms 6708 KB Output is correct
40 Correct 2 ms 6488 KB Output is correct
41 Correct 2 ms 6492 KB Output is correct
42 Correct 2 ms 6492 KB Output is correct
43 Correct 2 ms 6492 KB Output is correct
44 Correct 2 ms 6492 KB Output is correct
45 Correct 2 ms 6488 KB Output is correct
46 Correct 2 ms 6492 KB Output is correct
47 Correct 2 ms 6492 KB Output is correct
48 Correct 2 ms 6492 KB Output is correct
49 Correct 2 ms 6556 KB Output is correct
50 Correct 2 ms 6492 KB Output is correct
51 Correct 2 ms 6492 KB Output is correct
52 Correct 2 ms 6492 KB Output is correct
53 Correct 2 ms 6492 KB Output is correct
54 Correct 2 ms 6492 KB Output is correct
55 Correct 2 ms 6560 KB Output is correct
56 Correct 2 ms 6492 KB Output is correct
57 Correct 2 ms 6744 KB Output is correct
58 Correct 2 ms 6492 KB Output is correct
59 Correct 2 ms 6492 KB Output is correct
60 Correct 2 ms 6740 KB Output is correct
61 Correct 2 ms 6644 KB Output is correct
62 Correct 2 ms 6748 KB Output is correct
63 Correct 2 ms 6492 KB Output is correct
64 Correct 127 ms 17088 KB Output is correct
65 Correct 64 ms 17100 KB Output is correct
66 Correct 62 ms 17084 KB Output is correct
67 Correct 82 ms 17040 KB Output is correct
68 Correct 63 ms 17088 KB Output is correct
69 Correct 96 ms 17044 KB Output is correct
70 Correct 89 ms 16952 KB Output is correct
71 Correct 62 ms 17056 KB Output is correct
72 Correct 86 ms 17036 KB Output is correct
73 Correct 125 ms 28684 KB Output is correct
74 Correct 104 ms 28480 KB Output is correct
75 Correct 86 ms 18316 KB Output is correct
76 Correct 79 ms 18228 KB Output is correct
77 Correct 63 ms 17036 KB Output is correct
78 Correct 90 ms 17040 KB Output is correct
79 Correct 66 ms 16968 KB Output is correct
80 Correct 67 ms 17024 KB Output is correct
81 Correct 54 ms 16992 KB Output is correct
82 Correct 65 ms 16900 KB Output is correct
83 Correct 99 ms 22092 KB Output is correct
84 Correct 87 ms 24284 KB Output is correct
85 Correct 124 ms 23844 KB Output is correct
86 Correct 65 ms 18380 KB Output is correct
87 Correct 64 ms 17684 KB Output is correct
88 Correct 63 ms 17932 KB Output is correct
89 Correct 64 ms 17808 KB Output is correct
90 Correct 68 ms 17716 KB Output is correct
91 Correct 70 ms 17784 KB Output is correct
92 Correct 77 ms 18108 KB Output is correct
93 Correct 79 ms 20428 KB Output is correct
94 Correct 77 ms 22212 KB Output is correct
95 Correct 81 ms 20804 KB Output is correct
96 Correct 81 ms 18928 KB Output is correct
97 Correct 74 ms 17620 KB Output is correct
98 Correct 60 ms 17148 KB Output is correct
99 Correct 81 ms 17368 KB Output is correct
100 Correct 86 ms 19900 KB Output is correct
101 Correct 84 ms 17920 KB Output is correct
102 Correct 62 ms 17312 KB Output is correct
103 Correct 62 ms 17388 KB Output is correct
104 Correct 47 ms 17600 KB Output is correct
105 Correct 99 ms 25460 KB Output is correct
106 Correct 57 ms 17672 KB Output is correct
107 Correct 42 ms 17600 KB Output is correct
108 Correct 104 ms 29388 KB Output is correct
109 Correct 61 ms 17604 KB Output is correct
110 Correct 80 ms 29648 KB Output is correct
111 Correct 92 ms 17056 KB Output is correct