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Submission #390152

# Submission time Handle Problem Language Result Execution time Memory
390152 2021-04-15T13:19:19 Z Alex_tz307 Traffic (IOI10_traffic) C++17
50 / 100
 578 ms 174644 KB 
#include <bits/stdc++.h>

using namespace std;

void fastIO() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
}

const int NMAX = 1e6;
int a[NMAX], dp[NMAX], sum[NMAX], ans;
vector<int> G[NMAX];

void dfs1(int u, int parent) {
  sum[u] = a[u];
  for (int v : G[u])
    if (v != parent) {
      dfs1(v, u);
      sum[u] += sum[v];
      if (sum[v] > dp[u])
        dp[u] = sum[v];
    }
}

void dfs2(int u, int parent, int s) {
  if (dp[u] < dp[ans])
    ans = u;
  for (int v : G[u])
    if (v != parent) {
      int aux = dp[v];
      if (s + a[u] > dp[v])
        dp[v] = s + a[u];
      dfs2(v, u, s + a[u]);
      dp[v] = aux;
    }
}

int LocateCentre(int N, int pp[], int S[], int D[]) {
  for (int i = 0; i < N - 1; ++i) {
    G[S[i]].emplace_back(D[i]);
    G[D[i]].emplace_back(S[i]);
  }
  for (int i = 0; i < N; ++i)
    a[i] = pp[i];
  dfs1(0, -1);
  dfs2(0, -1, 0);
  return ans;
}

/*int N, P[NMAX], S[NMAX], D[NMAX];

int main() {
  fastIO();
  cin >> N;
  for (int i = 0; i < N; ++i)
    cin >> P[i];
  for (int i = 0; i < N - 1; ++i)
    cin >> S[i] >> D[i];
  cout << LocateCentre(N, P, S, D) << '\n';
  return 0;
} */

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23756 KB Output is correct
2 Correct 17 ms 23756 KB Output is correct
3 Correct 16 ms 23788 KB Output is correct
4 Correct 16 ms 23768 KB Output is correct
5 Correct 16 ms 23724 KB Output is correct
6 Correct 16 ms 23756 KB Output is correct
7 Correct 15 ms 23756 KB Output is correct
8 Correct 15 ms 23756 KB Output is correct
9 Correct 16 ms 23792 KB Output is correct
10 Correct 16 ms 23756 KB Output is correct
11 Correct 15 ms 23788 KB Output is correct
12 Correct 16 ms 23732 KB Output is correct
13 Correct 16 ms 23784 KB Output is correct
14 Correct 15 ms 23788 KB Output is correct
15 Correct 17 ms 23756 KB Output is correct
16 Correct 16 ms 23836 KB Output is correct
17 Correct 15 ms 23740 KB Output is correct
18 Correct 16 ms 23792 KB Output is correct
19 Correct 16 ms 23796 KB Output is correct
20 Correct 15 ms 23756 KB Output is correct
21 Correct 15 ms 23788 KB Output is correct
22 Correct 16 ms 23756 KB Output is correct
23 Correct 16 ms 23788 KB Output is correct
24 Correct 16 ms 23780 KB Output is correct
25 Correct 16 ms 23876 KB Output is correct
26 Correct 16 ms 23756 KB Output is correct
27 Correct 16 ms 23784 KB Output is correct
28 Correct 16 ms 23792 KB Output is correct
29 Correct 16 ms 23788 KB Output is correct
30 Correct 16 ms 23884 KB Output is correct
31 Correct 18 ms 23904 KB Output is correct
32 Correct 18 ms 23884 KB Output is correct
33 Correct 19 ms 23884 KB Output is correct
34 Correct 17 ms 23792 KB Output is correct
35 Correct 15 ms 23884 KB Output is correct
36 Correct 16 ms 23884 KB Output is correct
37 Correct 16 ms 23932 KB Output is correct
38 Correct 16 ms 23824 KB Output is correct
39 Correct 16 ms 23832 KB Output is correct
40 Correct 16 ms 23884 KB Output is correct
41 Correct 16 ms 23884 KB Output is correct
42 Correct 16 ms 23884 KB Output is correct
43 Correct 15 ms 23756 KB Output is correct
44 Correct 15 ms 23756 KB Output is correct
45 Correct 15 ms 23788 KB Output is correct
46 Correct 15 ms 23756 KB Output is correct
47 Correct 15 ms 23776 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23756 KB Output is correct
2 Correct 17 ms 23756 KB Output is correct
3 Correct 16 ms 23788 KB Output is correct
4 Correct 16 ms 23768 KB Output is correct
5 Correct 16 ms 23724 KB Output is correct
6 Correct 16 ms 23756 KB Output is correct
7 Correct 15 ms 23756 KB Output is correct
8 Correct 15 ms 23756 KB Output is correct
9 Correct 16 ms 23792 KB Output is correct
10 Correct 16 ms 23756 KB Output is correct
11 Correct 15 ms 23788 KB Output is correct
12 Correct 16 ms 23732 KB Output is correct
13 Correct 16 ms 23784 KB Output is correct
14 Correct 15 ms 23788 KB Output is correct
15 Correct 17 ms 23756 KB Output is correct
16 Correct 16 ms 23836 KB Output is correct
17 Correct 15 ms 23740 KB Output is correct
18 Correct 16 ms 23792 KB Output is correct
19 Correct 16 ms 23796 KB Output is correct
20 Correct 15 ms 23756 KB Output is correct
21 Correct 15 ms 23788 KB Output is correct
22 Correct 16 ms 23756 KB Output is correct
23 Correct 16 ms 23788 KB Output is correct
24 Correct 16 ms 23780 KB Output is correct
25 Correct 16 ms 23876 KB Output is correct
26 Correct 16 ms 23756 KB Output is correct
27 Correct 16 ms 23784 KB Output is correct
28 Correct 16 ms 23792 KB Output is correct
29 Correct 16 ms 23788 KB Output is correct
30 Correct 16 ms 23884 KB Output is correct
31 Correct 18 ms 23904 KB Output is correct
32 Correct 18 ms 23884 KB Output is correct
33 Correct 19 ms 23884 KB Output is correct
34 Correct 17 ms 23792 KB Output is correct
35 Correct 15 ms 23884 KB Output is correct
36 Correct 16 ms 23884 KB Output is correct
37 Correct 16 ms 23932 KB Output is correct
38 Correct 16 ms 23824 KB Output is correct
39 Correct 16 ms 23832 KB Output is correct
40 Correct 16 ms 23884 KB Output is correct
41 Correct 16 ms 23884 KB Output is correct
42 Correct 16 ms 23884 KB Output is correct
43 Correct 15 ms 23756 KB Output is correct
44 Correct 15 ms 23756 KB Output is correct
45 Correct 15 ms 23788 KB Output is correct
46 Correct 15 ms 23756 KB Output is correct
47 Correct 15 ms 23776 KB Output is correct
48 Correct 16 ms 23716 KB Output is correct
49 Correct 16 ms 23792 KB Output is correct
50 Correct 17 ms 23788 KB Output is correct
51 Correct 19 ms 23816 KB Output is correct
52 Correct 18 ms 23784 KB Output is correct
53 Correct 18 ms 23788 KB Output is correct
54 Correct 16 ms 23756 KB Output is correct
55 Correct 15 ms 23712 KB Output is correct
56 Correct 15 ms 23760 KB Output is correct
57 Correct 15 ms 23808 KB Output is correct
58 Correct 15 ms 23788 KB Output is correct
59 Correct 15 ms 23756 KB Output is correct
60 Correct 15 ms 23756 KB Output is correct
61 Correct 15 ms 23756 KB Output is correct
62 Correct 16 ms 23756 KB Output is correct
63 Correct 16 ms 23788 KB Output is correct
64 Correct 17 ms 23796 KB Output is correct
65 Correct 15 ms 23800 KB Output is correct
66 Correct 16 ms 23780 KB Output is correct
67 Correct 17 ms 23756 KB Output is correct
68 Correct 42 ms 31204 KB Output is correct
69 Correct 78 ms 38724 KB Output is correct
70 Correct 16 ms 23784 KB Output is correct
71 Correct 98 ms 46348 KB Output is correct
72 Correct 131 ms 53808 KB Output is correct
73 Correct 155 ms 61380 KB Output is correct
74 Correct 184 ms 69060 KB Output is correct
75 Correct 215 ms 76524 KB Output is correct
76 Correct 237 ms 84164 KB Output is correct
77 Correct 269 ms 91828 KB Output is correct
78 Correct 319 ms 99264 KB Output is correct
79 Correct 367 ms 106948 KB Output is correct
80 Correct 346 ms 114284 KB Output is correct
81 Correct 15 ms 23756 KB Output is correct
82 Correct 377 ms 121992 KB Output is correct
83 Correct 405 ms 129432 KB Output is correct
84 Correct 446 ms 136900 KB Output is correct
85 Correct 508 ms 144452 KB Output is correct
86 Correct 496 ms 152068 KB Output is correct
87 Correct 520 ms 159616 KB Output is correct
88 Correct 555 ms 167284 KB Output is correct
89 Correct 578 ms 174644 KB Output is correct
90 Correct 15 ms 24028 KB Output is correct
91 Correct 14 ms 23816 KB Output is correct
92 Correct 17 ms 23784 KB Output is correct
93 Correct 16 ms 23788 KB Output is correct
94 Correct 15 ms 23732 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23756 KB Output is correct
2 Correct 17 ms 23756 KB Output is correct
3 Correct 16 ms 23788 KB Output is correct
4 Correct 16 ms 23768 KB Output is correct
5 Correct 16 ms 23724 KB Output is correct
6 Correct 16 ms 23756 KB Output is correct
7 Correct 15 ms 23756 KB Output is correct
8 Correct 15 ms 23756 KB Output is correct
9 Correct 16 ms 23792 KB Output is correct
10 Correct 16 ms 23756 KB Output is correct
11 Correct 15 ms 23788 KB Output is correct
12 Correct 16 ms 23732 KB Output is correct
13 Correct 16 ms 23784 KB Output is correct
14 Correct 15 ms 23788 KB Output is correct
15 Correct 17 ms 23756 KB Output is correct
16 Correct 16 ms 23836 KB Output is correct
17 Correct 15 ms 23740 KB Output is correct
18 Correct 16 ms 23792 KB Output is correct
19 Correct 16 ms 23796 KB Output is correct
20 Correct 15 ms 23756 KB Output is correct
21 Correct 15 ms 23788 KB Output is correct
22 Correct 16 ms 23756 KB Output is correct
23 Correct 16 ms 23788 KB Output is correct
24 Correct 16 ms 23780 KB Output is correct
25 Correct 16 ms 23876 KB Output is correct
26 Correct 16 ms 23756 KB Output is correct
27 Correct 16 ms 23784 KB Output is correct
28 Correct 16 ms 23792 KB Output is correct
29 Correct 16 ms 23788 KB Output is correct
30 Correct 16 ms 23884 KB Output is correct
31 Correct 18 ms 23904 KB Output is correct
32 Correct 18 ms 23884 KB Output is correct
33 Correct 19 ms 23884 KB Output is correct
34 Correct 17 ms 23792 KB Output is correct
35 Correct 15 ms 23884 KB Output is correct
36 Correct 16 ms 23884 KB Output is correct
37 Correct 16 ms 23932 KB Output is correct
38 Correct 16 ms 23824 KB Output is correct
39 Correct 16 ms 23832 KB Output is correct
40 Correct 16 ms 23884 KB Output is correct
41 Correct 16 ms 23884 KB Output is correct
42 Correct 16 ms 23884 KB Output is correct
43 Correct 15 ms 23756 KB Output is correct
44 Correct 15 ms 23756 KB Output is correct
45 Correct 15 ms 23788 KB Output is correct
46 Correct 15 ms 23756 KB Output is correct
47 Correct 15 ms 23776 KB Output is correct
48 Incorrect 14 ms 23756 KB Output isn't correct
49 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23756 KB Output is correct
2 Correct 17 ms 23756 KB Output is correct
3 Correct 16 ms 23788 KB Output is correct
4 Correct 16 ms 23768 KB Output is correct
5 Correct 16 ms 23724 KB Output is correct
6 Correct 16 ms 23756 KB Output is correct
7 Correct 15 ms 23756 KB Output is correct
8 Correct 15 ms 23756 KB Output is correct
9 Correct 16 ms 23792 KB Output is correct
10 Correct 16 ms 23756 KB Output is correct
11 Correct 15 ms 23788 KB Output is correct
12 Correct 16 ms 23732 KB Output is correct
13 Correct 16 ms 23784 KB Output is correct
14 Correct 15 ms 23788 KB Output is correct
15 Correct 17 ms 23756 KB Output is correct
16 Correct 16 ms 23836 KB Output is correct
17 Correct 15 ms 23740 KB Output is correct
18 Correct 16 ms 23792 KB Output is correct
19 Correct 16 ms 23796 KB Output is correct
20 Correct 15 ms 23756 KB Output is correct
21 Correct 15 ms 23788 KB Output is correct
22 Correct 16 ms 23756 KB Output is correct
23 Correct 16 ms 23788 KB Output is correct
24 Correct 16 ms 23780 KB Output is correct
25 Correct 16 ms 23876 KB Output is correct
26 Correct 16 ms 23756 KB Output is correct
27 Correct 16 ms 23784 KB Output is correct
28 Correct 16 ms 23792 KB Output is correct
29 Correct 16 ms 23788 KB Output is correct
30 Correct 16 ms 23884 KB Output is correct
31 Correct 18 ms 23904 KB Output is correct
32 Correct 18 ms 23884 KB Output is correct
33 Correct 19 ms 23884 KB Output is correct
34 Correct 17 ms 23792 KB Output is correct
35 Correct 15 ms 23884 KB Output is correct
36 Correct 16 ms 23884 KB Output is correct
37 Correct 16 ms 23932 KB Output is correct
38 Correct 16 ms 23824 KB Output is correct
39 Correct 16 ms 23832 KB Output is correct
40 Correct 16 ms 23884 KB Output is correct
41 Correct 16 ms 23884 KB Output is correct
42 Correct 16 ms 23884 KB Output is correct
43 Correct 15 ms 23756 KB Output is correct
44 Correct 15 ms 23756 KB Output is correct
45 Correct 15 ms 23788 KB Output is correct
46 Correct 15 ms 23756 KB Output is correct
47 Correct 15 ms 23776 KB Output is correct
48 Correct 16 ms 23716 KB Output is correct
49 Correct 16 ms 23792 KB Output is correct
50 Correct 17 ms 23788 KB Output is correct
51 Correct 19 ms 23816 KB Output is correct
52 Correct 18 ms 23784 KB Output is correct
53 Correct 18 ms 23788 KB Output is correct
54 Correct 16 ms 23756 KB Output is correct
55 Correct 15 ms 23712 KB Output is correct
56 Correct 15 ms 23760 KB Output is correct
57 Correct 15 ms 23808 KB Output is correct
58 Correct 15 ms 23788 KB Output is correct
59 Correct 15 ms 23756 KB Output is correct
60 Correct 15 ms 23756 KB Output is correct
61 Correct 15 ms 23756 KB Output is correct
62 Correct 16 ms 23756 KB Output is correct
63 Correct 16 ms 23788 KB Output is correct
64 Correct 17 ms 23796 KB Output is correct
65 Correct 15 ms 23800 KB Output is correct
66 Correct 16 ms 23780 KB Output is correct
67 Correct 17 ms 23756 KB Output is correct
68 Correct 42 ms 31204 KB Output is correct
69 Correct 78 ms 38724 KB Output is correct
70 Correct 16 ms 23784 KB Output is correct
71 Correct 98 ms 46348 KB Output is correct
72 Correct 131 ms 53808 KB Output is correct
73 Correct 155 ms 61380 KB Output is correct
74 Correct 184 ms 69060 KB Output is correct
75 Correct 215 ms 76524 KB Output is correct
76 Correct 237 ms 84164 KB Output is correct
77 Correct 269 ms 91828 KB Output is correct
78 Correct 319 ms 99264 KB Output is correct
79 Correct 367 ms 106948 KB Output is correct
80 Correct 346 ms 114284 KB Output is correct
81 Correct 15 ms 23756 KB Output is correct
82 Correct 377 ms 121992 KB Output is correct
83 Correct 405 ms 129432 KB Output is correct
84 Correct 446 ms 136900 KB Output is correct
85 Correct 508 ms 144452 KB Output is correct
86 Correct 496 ms 152068 KB Output is correct
87 Correct 520 ms 159616 KB Output is correct
88 Correct 555 ms 167284 KB Output is correct
89 Correct 578 ms 174644 KB Output is correct
90 Correct 15 ms 24028 KB Output is correct
91 Correct 14 ms 23816 KB Output is correct
92 Correct 17 ms 23784 KB Output is correct
93 Correct 16 ms 23788 KB Output is correct
94 Correct 15 ms 23732 KB Output is correct
95 Incorrect 14 ms 23756 KB Output isn't correct
96 Halted 0 ms 0 KB -