oj.uz

Submission #518695

# Submission time Handle Problem Language Result Execution time Memory
518695 2022-01-24T12:43:30 Z cig32 Power Plant (JOI20_power) C++17
47 / 100
 1500 ms 28228 KB 
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
mt19937_64 rng((int)std::chrono::steady_clock::now().time_since_epoch().count());
const int MAXN = 3e5 + 10;
const int MOD = 1e9 + 7;
#define int long long
 
vector<int> adj[MAXN];
char c[MAXN];
int dp[MAXN];
int dpf(int node, int prev) {
  int sum = 0, mx = 0;
  for(int x: adj[node]) {
    if(x != prev) {
      int d = dpf(x, node);
      sum += d;
      mx = max(mx, d);
    }
  }
  if(prev == -1 && c[node] == '1') {
    return dp[node] = max(mx + 1, sum - 1);
  }
  if(prev == -1 && c[node] == '0') {
    return dp[node] = sum;
  }
  if(c[node] == '1') {
    return dp[node] = max(1ll, sum - 1);
  }
  else {
    return dp[node] = sum;
  }
}
int ans = 0;
void reroot(int x, int y) {
  dp[x] = (c[x] == '1' ? 1 : 0);
  int sum = 0, mx = 0;
  for(int z: adj[y]) {
    sum += dp[z];
    mx = max(mx, dp[z]);
  }
  dp[y] = (c[y] == '1' ? max(mx + 1, sum - 1) : sum);
}
void dfs(int node, int prev) {
  ans = max(ans, dp[node]);
  for(int x: adj[node]) {
    if(x != prev) {
      reroot(node, x);
      dfs(x, node);
      reroot(x, node);
    }
  }
}
void solve(int tc) {
  int N;
  cin >> N;
  for(int i=1; i<N; i++) {
    int a, b;
    cin >> a >> b;
    adj[a].push_back(b);
    adj[b].push_back(a);
  }
  if(N == 1) {
    cout << "1\n"; return;
  }
  for(int i=1; i<=N; i++) cin >> c[i];
  dpf(1, -1);
  dfs(1, -1);
  cout << ans << "\n";
}
 
int32_t main(){
  ios::sync_with_stdio(0); cin.tie(0);
  int t = 1; //cin >> t;
  for(int i=1; i<=t; i++) solve(i);
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 5 ms 7244 KB Output is correct
4 Correct 6 ms 7244 KB Output is correct
5 Correct 5 ms 7244 KB Output is correct
6 Correct 4 ms 7244 KB Output is correct
7 Correct 4 ms 7304 KB Output is correct
8 Correct 4 ms 7244 KB Output is correct
9 Correct 4 ms 7244 KB Output is correct
10 Correct 5 ms 7244 KB Output is correct
11 Correct 5 ms 7372 KB Output is correct
12 Correct 5 ms 7244 KB Output is correct
13 Correct 4 ms 7244 KB Output is correct
14 Correct 4 ms 7372 KB Output is correct
15 Correct 4 ms 7244 KB Output is correct
16 Correct 4 ms 7372 KB Output is correct
17 Correct 4 ms 7244 KB Output is correct
18 Correct 5 ms 7244 KB Output is correct
19 Correct 5 ms 7244 KB Output is correct
20 Correct 4 ms 7244 KB Output is correct
21 Correct 4 ms 7244 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 5 ms 7244 KB Output is correct
4 Correct 6 ms 7244 KB Output is correct
5 Correct 5 ms 7244 KB Output is correct
6 Correct 4 ms 7244 KB Output is correct
7 Correct 4 ms 7304 KB Output is correct
8 Correct 4 ms 7244 KB Output is correct
9 Correct 4 ms 7244 KB Output is correct
10 Correct 5 ms 7244 KB Output is correct
11 Correct 5 ms 7372 KB Output is correct
12 Correct 5 ms 7244 KB Output is correct
13 Correct 4 ms 7244 KB Output is correct
14 Correct 4 ms 7372 KB Output is correct
15 Correct 4 ms 7244 KB Output is correct
16 Correct 4 ms 7372 KB Output is correct
17 Correct 4 ms 7244 KB Output is correct
18 Correct 5 ms 7244 KB Output is correct
19 Correct 5 ms 7244 KB Output is correct
20 Correct 4 ms 7244 KB Output is correct
21 Correct 4 ms 7244 KB Output is correct
22 Correct 5 ms 7464 KB Output is correct
23 Correct 6 ms 7372 KB Output is correct
24 Correct 5 ms 7460 KB Output is correct
25 Correct 6 ms 7500 KB Output is correct
26 Correct 6 ms 7372 KB Output is correct
27 Correct 5 ms 7372 KB Output is correct
28 Correct 5 ms 7372 KB Output is correct
29 Correct 5 ms 7500 KB Output is correct
30 Correct 6 ms 7500 KB Output is correct
31 Correct 5 ms 7372 KB Output is correct
32 Correct 6 ms 7372 KB Output is correct
33 Correct 6 ms 7468 KB Output is correct
34 Correct 6 ms 7372 KB Output is correct
35 Correct 5 ms 7372 KB Output is correct
36 Correct 5 ms 7372 KB Output is correct
37 Correct 8 ms 7372 KB Output is correct
38 Correct 5 ms 7372 KB Output is correct
39 Correct 5 ms 7500 KB Output is correct
40 Correct 5 ms 7372 KB Output is correct
41 Correct 5 ms 7500 KB Output is correct
42 Correct 7 ms 7372 KB Output is correct
43 Correct 6 ms 7372 KB Output is correct
44 Correct 5 ms 7372 KB Output is correct
45 Correct 5 ms 7372 KB Output is correct
46 Correct 5 ms 7372 KB Output is correct
47 Correct 5 ms 7372 KB Output is correct
48 Correct 6 ms 7512 KB Output is correct
49 Correct 5 ms 7532 KB Output is correct
50 Correct 5 ms 7384 KB Output is correct
51 Correct 5 ms 7384 KB Output is correct
52 Correct 6 ms 7484 KB Output is correct
53 Correct 6 ms 7384 KB Output is correct
54 Correct 5 ms 7384 KB Output is correct
55 Correct 5 ms 7488 KB Output is correct
56 Correct 11 ms 7384 KB Output is correct
57 Correct 5 ms 7512 KB Output is correct
58 Correct 8 ms 7388 KB Output is correct
59 Correct 8 ms 7372 KB Output is correct
60 Correct 5 ms 7500 KB Output is correct
61 Correct 9 ms 7388 KB Output is correct
62 Correct 5 ms 7500 KB Output is correct
63 Correct 6 ms 7372 KB Output is correct

Subtask #3
0.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 5 ms 7244 KB Output is correct
4 Correct 6 ms 7244 KB Output is correct
5 Correct 5 ms 7244 KB Output is correct
6 Correct 4 ms 7244 KB Output is correct
7 Correct 4 ms 7304 KB Output is correct
8 Correct 4 ms 7244 KB Output is correct
9 Correct 4 ms 7244 KB Output is correct
10 Correct 5 ms 7244 KB Output is correct
11 Correct 5 ms 7372 KB Output is correct
12 Correct 5 ms 7244 KB Output is correct
13 Correct 4 ms 7244 KB Output is correct
14 Correct 4 ms 7372 KB Output is correct
15 Correct 4 ms 7244 KB Output is correct
16 Correct 4 ms 7372 KB Output is correct
17 Correct 4 ms 7244 KB Output is correct
18 Correct 5 ms 7244 KB Output is correct
19 Correct 5 ms 7244 KB Output is correct
20 Correct 4 ms 7244 KB Output is correct
21 Correct 4 ms 7244 KB Output is correct
22 Correct 5 ms 7464 KB Output is correct
23 Correct 6 ms 7372 KB Output is correct
24 Correct 5 ms 7460 KB Output is correct
25 Correct 6 ms 7500 KB Output is correct
26 Correct 6 ms 7372 KB Output is correct
27 Correct 5 ms 7372 KB Output is correct
28 Correct 5 ms 7372 KB Output is correct
29 Correct 5 ms 7500 KB Output is correct
30 Correct 6 ms 7500 KB Output is correct
31 Correct 5 ms 7372 KB Output is correct
32 Correct 6 ms 7372 KB Output is correct
33 Correct 6 ms 7468 KB Output is correct
34 Correct 6 ms 7372 KB Output is correct
35 Correct 5 ms 7372 KB Output is correct
36 Correct 5 ms 7372 KB Output is correct
37 Correct 8 ms 7372 KB Output is correct
38 Correct 5 ms 7372 KB Output is correct
39 Correct 5 ms 7500 KB Output is correct
40 Correct 5 ms 7372 KB Output is correct
41 Correct 5 ms 7500 KB Output is correct
42 Correct 7 ms 7372 KB Output is correct
43 Correct 6 ms 7372 KB Output is correct
44 Correct 5 ms 7372 KB Output is correct
45 Correct 5 ms 7372 KB Output is correct
46 Correct 5 ms 7372 KB Output is correct
47 Correct 5 ms 7372 KB Output is correct
48 Correct 6 ms 7512 KB Output is correct
49 Correct 5 ms 7532 KB Output is correct
50 Correct 5 ms 7384 KB Output is correct
51 Correct 5 ms 7384 KB Output is correct
52 Correct 6 ms 7484 KB Output is correct
53 Correct 6 ms 7384 KB Output is correct
54 Correct 5 ms 7384 KB Output is correct
55 Correct 5 ms 7488 KB Output is correct
56 Correct 11 ms 7384 KB Output is correct
57 Correct 5 ms 7512 KB Output is correct
58 Correct 8 ms 7388 KB Output is correct
59 Correct 8 ms 7372 KB Output is correct
60 Correct 5 ms 7500 KB Output is correct
61 Correct 9 ms 7388 KB Output is correct
62 Correct 5 ms 7500 KB Output is correct
63 Correct 6 ms 7372 KB Output is correct
64 Correct 149 ms 16452 KB Output is correct
65 Correct 165 ms 19188 KB Output is correct
66 Correct 194 ms 19192 KB Output is correct
67 Correct 191 ms 19120 KB Output is correct
68 Correct 177 ms 19184 KB Output is correct
69 Correct 215 ms 19180 KB Output is correct
70 Correct 152 ms 19144 KB Output is correct
71 Correct 186 ms 19184 KB Output is correct
72 Correct 172 ms 19188 KB Output is correct
73 Correct 206 ms 28192 KB Output is correct
74 Correct 168 ms 28228 KB Output is correct
75 Correct 163 ms 20416 KB Output is correct
76 Correct 173 ms 20416 KB Output is correct
77 Correct 160 ms 19092 KB Output is correct
78 Correct 173 ms 19172 KB Output is correct
79 Correct 166 ms 19176 KB Output is correct
80 Correct 185 ms 19176 KB Output is correct
81 Execution timed out 1565 ms 19108 KB Time limit exceeded
82 Halted 0 ms 0 KB -