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Submission #390154

# Submission time Handle Problem Language Result Execution time Memory
390154 2021-04-15T13:23:51 Z Alex_tz307 Traffic (IOI10_traffic) C++17
50 / 100
 584 ms 180256 KB 
#include <bits/stdc++.h>

using namespace std;
using int64 = long long;

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

const int NMAX = 1e6 + 6;
int a[NMAX], ans;
int64 dp[NMAX], sum[NMAX];
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, int64 s) {
  if (dp[u] < dp[ans])
    ans = u;
  for (int v : G[u])
    if (v != parent) {
      int64 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;
}

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 23756 KB Output is correct
2 Correct 15 ms 23784 KB Output is correct
3 Correct 16 ms 23756 KB Output is correct
4 Correct 15 ms 23756 KB Output is correct
5 Correct 15 ms 23776 KB Output is correct
6 Correct 15 ms 23820 KB Output is correct
7 Correct 15 ms 23732 KB Output is correct
8 Correct 14 ms 23756 KB Output is correct
9 Correct 14 ms 23756 KB Output is correct
10 Correct 14 ms 23796 KB Output is correct
11 Correct 14 ms 23780 KB Output is correct
12 Correct 14 ms 23768 KB Output is correct
13 Correct 14 ms 23780 KB Output is correct
14 Correct 14 ms 23756 KB Output is correct
15 Correct 14 ms 23756 KB Output is correct
16 Correct 15 ms 23756 KB Output is correct
17 Correct 16 ms 23740 KB Output is correct
18 Correct 15 ms 23756 KB Output is correct
19 Correct 14 ms 23756 KB Output is correct
20 Correct 16 ms 23764 KB Output is correct
21 Correct 15 ms 23756 KB Output is correct
22 Correct 15 ms 23756 KB Output is correct
23 Correct 15 ms 23764 KB Output is correct
24 Correct 14 ms 23756 KB Output is correct
25 Correct 15 ms 23884 KB Output is correct
26 Correct 15 ms 23756 KB Output is correct
27 Correct 15 ms 23756 KB Output is correct
28 Correct 15 ms 23880 KB Output is correct
29 Correct 15 ms 23884 KB Output is correct
30 Correct 16 ms 23896 KB Output is correct
31 Correct 15 ms 23884 KB Output is correct
32 Correct 15 ms 23884 KB Output is correct
33 Correct 15 ms 23896 KB Output is correct
34 Correct 14 ms 23756 KB Output is correct
35 Correct 15 ms 23928 KB Output is correct
36 Correct 15 ms 23908 KB Output is correct
37 Correct 15 ms 23884 KB Output is correct
38 Correct 15 ms 23884 KB Output is correct
39 Correct 15 ms 23944 KB Output is correct
40 Correct 15 ms 23920 KB Output is correct
41 Correct 15 ms 23884 KB Output is correct
42 Correct 15 ms 23884 KB Output is correct
43 Correct 16 ms 23884 KB Output is correct
44 Correct 14 ms 23756 KB Output is correct
45 Correct 15 ms 23756 KB Output is correct
46 Correct 15 ms 23900 KB Output is correct
47 Correct 15 ms 23708 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 23756 KB Output is correct
2 Correct 15 ms 23784 KB Output is correct
3 Correct 16 ms 23756 KB Output is correct
4 Correct 15 ms 23756 KB Output is correct
5 Correct 15 ms 23776 KB Output is correct
6 Correct 15 ms 23820 KB Output is correct
7 Correct 15 ms 23732 KB Output is correct
8 Correct 14 ms 23756 KB Output is correct
9 Correct 14 ms 23756 KB Output is correct
10 Correct 14 ms 23796 KB Output is correct
11 Correct 14 ms 23780 KB Output is correct
12 Correct 14 ms 23768 KB Output is correct
13 Correct 14 ms 23780 KB Output is correct
14 Correct 14 ms 23756 KB Output is correct
15 Correct 14 ms 23756 KB Output is correct
16 Correct 15 ms 23756 KB Output is correct
17 Correct 16 ms 23740 KB Output is correct
18 Correct 15 ms 23756 KB Output is correct
19 Correct 14 ms 23756 KB Output is correct
20 Correct 16 ms 23764 KB Output is correct
21 Correct 15 ms 23756 KB Output is correct
22 Correct 15 ms 23756 KB Output is correct
23 Correct 15 ms 23764 KB Output is correct
24 Correct 14 ms 23756 KB Output is correct
25 Correct 15 ms 23884 KB Output is correct
26 Correct 15 ms 23756 KB Output is correct
27 Correct 15 ms 23756 KB Output is correct
28 Correct 15 ms 23880 KB Output is correct
29 Correct 15 ms 23884 KB Output is correct
30 Correct 16 ms 23896 KB Output is correct
31 Correct 15 ms 23884 KB Output is correct
32 Correct 15 ms 23884 KB Output is correct
33 Correct 15 ms 23896 KB Output is correct
34 Correct 14 ms 23756 KB Output is correct
35 Correct 15 ms 23928 KB Output is correct
36 Correct 15 ms 23908 KB Output is correct
37 Correct 15 ms 23884 KB Output is correct
38 Correct 15 ms 23884 KB Output is correct
39 Correct 15 ms 23944 KB Output is correct
40 Correct 15 ms 23920 KB Output is correct
41 Correct 15 ms 23884 KB Output is correct
42 Correct 15 ms 23884 KB Output is correct
43 Correct 16 ms 23884 KB Output is correct
44 Correct 14 ms 23756 KB Output is correct
45 Correct 15 ms 23756 KB Output is correct
46 Correct 15 ms 23900 KB Output is correct
47 Correct 15 ms 23708 KB Output is correct
48 Correct 18 ms 23828 KB Output is correct
49 Correct 13 ms 23792 KB Output is correct
50 Correct 14 ms 23780 KB Output is correct
51 Correct 15 ms 23820 KB Output is correct
52 Correct 15 ms 23756 KB Output is correct
53 Correct 15 ms 23776 KB Output is correct
54 Correct 15 ms 23756 KB Output is correct
55 Correct 15 ms 23736 KB Output is correct
56 Correct 15 ms 23756 KB Output is correct
57 Correct 14 ms 23768 KB Output is correct
58 Correct 15 ms 23784 KB Output is correct
59 Correct 14 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 15 ms 23756 KB Output is correct
63 Correct 15 ms 23748 KB Output is correct
64 Correct 14 ms 23816 KB Output is correct
65 Correct 14 ms 23804 KB Output is correct
66 Correct 15 ms 23736 KB Output is correct
67 Correct 14 ms 23756 KB Output is correct
68 Correct 41 ms 31612 KB Output is correct
69 Correct 69 ms 39388 KB Output is correct
70 Correct 15 ms 23760 KB Output is correct
71 Correct 98 ms 47272 KB Output is correct
72 Correct 127 ms 55020 KB Output is correct
73 Correct 155 ms 63060 KB Output is correct
74 Correct 179 ms 70764 KB Output is correct
75 Correct 208 ms 78532 KB Output is correct
76 Correct 236 ms 86604 KB Output is correct
77 Correct 263 ms 94276 KB Output is correct
78 Correct 301 ms 102060 KB Output is correct
79 Correct 326 ms 109876 KB Output is correct
80 Correct 352 ms 117692 KB Output is correct
81 Correct 15 ms 23760 KB Output is correct
82 Correct 385 ms 125528 KB Output is correct
83 Correct 429 ms 133384 KB Output is correct
84 Correct 447 ms 141128 KB Output is correct
85 Correct 469 ms 149100 KB Output is correct
86 Correct 500 ms 156868 KB Output is correct
87 Correct 526 ms 164800 KB Output is correct
88 Correct 560 ms 172552 KB Output is correct
89 Correct 584 ms 180256 KB Output is correct
90 Correct 14 ms 23756 KB Output is correct
91 Correct 14 ms 23828 KB Output is correct
92 Correct 15 ms 23756 KB Output is correct
93 Correct 14 ms 23756 KB Output is correct
94 Correct 15 ms 23756 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 23756 KB Output is correct
2 Correct 15 ms 23784 KB Output is correct
3 Correct 16 ms 23756 KB Output is correct
4 Correct 15 ms 23756 KB Output is correct
5 Correct 15 ms 23776 KB Output is correct
6 Correct 15 ms 23820 KB Output is correct
7 Correct 15 ms 23732 KB Output is correct
8 Correct 14 ms 23756 KB Output is correct
9 Correct 14 ms 23756 KB Output is correct
10 Correct 14 ms 23796 KB Output is correct
11 Correct 14 ms 23780 KB Output is correct
12 Correct 14 ms 23768 KB Output is correct
13 Correct 14 ms 23780 KB Output is correct
14 Correct 14 ms 23756 KB Output is correct
15 Correct 14 ms 23756 KB Output is correct
16 Correct 15 ms 23756 KB Output is correct
17 Correct 16 ms 23740 KB Output is correct
18 Correct 15 ms 23756 KB Output is correct
19 Correct 14 ms 23756 KB Output is correct
20 Correct 16 ms 23764 KB Output is correct
21 Correct 15 ms 23756 KB Output is correct
22 Correct 15 ms 23756 KB Output is correct
23 Correct 15 ms 23764 KB Output is correct
24 Correct 14 ms 23756 KB Output is correct
25 Correct 15 ms 23884 KB Output is correct
26 Correct 15 ms 23756 KB Output is correct
27 Correct 15 ms 23756 KB Output is correct
28 Correct 15 ms 23880 KB Output is correct
29 Correct 15 ms 23884 KB Output is correct
30 Correct 16 ms 23896 KB Output is correct
31 Correct 15 ms 23884 KB Output is correct
32 Correct 15 ms 23884 KB Output is correct
33 Correct 15 ms 23896 KB Output is correct
34 Correct 14 ms 23756 KB Output is correct
35 Correct 15 ms 23928 KB Output is correct
36 Correct 15 ms 23908 KB Output is correct
37 Correct 15 ms 23884 KB Output is correct
38 Correct 15 ms 23884 KB Output is correct
39 Correct 15 ms 23944 KB Output is correct
40 Correct 15 ms 23920 KB Output is correct
41 Correct 15 ms 23884 KB Output is correct
42 Correct 15 ms 23884 KB Output is correct
43 Correct 16 ms 23884 KB Output is correct
44 Correct 14 ms 23756 KB Output is correct
45 Correct 15 ms 23756 KB Output is correct
46 Correct 15 ms 23900 KB Output is correct
47 Correct 15 ms 23708 KB Output is correct
48 Incorrect 15 ms 23724 KB Output isn't correct
49 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 23756 KB Output is correct
2 Correct 15 ms 23784 KB Output is correct
3 Correct 16 ms 23756 KB Output is correct
4 Correct 15 ms 23756 KB Output is correct
5 Correct 15 ms 23776 KB Output is correct
6 Correct 15 ms 23820 KB Output is correct
7 Correct 15 ms 23732 KB Output is correct
8 Correct 14 ms 23756 KB Output is correct
9 Correct 14 ms 23756 KB Output is correct
10 Correct 14 ms 23796 KB Output is correct
11 Correct 14 ms 23780 KB Output is correct
12 Correct 14 ms 23768 KB Output is correct
13 Correct 14 ms 23780 KB Output is correct
14 Correct 14 ms 23756 KB Output is correct
15 Correct 14 ms 23756 KB Output is correct
16 Correct 15 ms 23756 KB Output is correct
17 Correct 16 ms 23740 KB Output is correct
18 Correct 15 ms 23756 KB Output is correct
19 Correct 14 ms 23756 KB Output is correct
20 Correct 16 ms 23764 KB Output is correct
21 Correct 15 ms 23756 KB Output is correct
22 Correct 15 ms 23756 KB Output is correct
23 Correct 15 ms 23764 KB Output is correct
24 Correct 14 ms 23756 KB Output is correct
25 Correct 15 ms 23884 KB Output is correct
26 Correct 15 ms 23756 KB Output is correct
27 Correct 15 ms 23756 KB Output is correct
28 Correct 15 ms 23880 KB Output is correct
29 Correct 15 ms 23884 KB Output is correct
30 Correct 16 ms 23896 KB Output is correct
31 Correct 15 ms 23884 KB Output is correct
32 Correct 15 ms 23884 KB Output is correct
33 Correct 15 ms 23896 KB Output is correct
34 Correct 14 ms 23756 KB Output is correct
35 Correct 15 ms 23928 KB Output is correct
36 Correct 15 ms 23908 KB Output is correct
37 Correct 15 ms 23884 KB Output is correct
38 Correct 15 ms 23884 KB Output is correct
39 Correct 15 ms 23944 KB Output is correct
40 Correct 15 ms 23920 KB Output is correct
41 Correct 15 ms 23884 KB Output is correct
42 Correct 15 ms 23884 KB Output is correct
43 Correct 16 ms 23884 KB Output is correct
44 Correct 14 ms 23756 KB Output is correct
45 Correct 15 ms 23756 KB Output is correct
46 Correct 15 ms 23900 KB Output is correct
47 Correct 15 ms 23708 KB Output is correct
48 Correct 18 ms 23828 KB Output is correct
49 Correct 13 ms 23792 KB Output is correct
50 Correct 14 ms 23780 KB Output is correct
51 Correct 15 ms 23820 KB Output is correct
52 Correct 15 ms 23756 KB Output is correct
53 Correct 15 ms 23776 KB Output is correct
54 Correct 15 ms 23756 KB Output is correct
55 Correct 15 ms 23736 KB Output is correct
56 Correct 15 ms 23756 KB Output is correct
57 Correct 14 ms 23768 KB Output is correct
58 Correct 15 ms 23784 KB Output is correct
59 Correct 14 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 15 ms 23756 KB Output is correct
63 Correct 15 ms 23748 KB Output is correct
64 Correct 14 ms 23816 KB Output is correct
65 Correct 14 ms 23804 KB Output is correct
66 Correct 15 ms 23736 KB Output is correct
67 Correct 14 ms 23756 KB Output is correct
68 Correct 41 ms 31612 KB Output is correct
69 Correct 69 ms 39388 KB Output is correct
70 Correct 15 ms 23760 KB Output is correct
71 Correct 98 ms 47272 KB Output is correct
72 Correct 127 ms 55020 KB Output is correct
73 Correct 155 ms 63060 KB Output is correct
74 Correct 179 ms 70764 KB Output is correct
75 Correct 208 ms 78532 KB Output is correct
76 Correct 236 ms 86604 KB Output is correct
77 Correct 263 ms 94276 KB Output is correct
78 Correct 301 ms 102060 KB Output is correct
79 Correct 326 ms 109876 KB Output is correct
80 Correct 352 ms 117692 KB Output is correct
81 Correct 15 ms 23760 KB Output is correct
82 Correct 385 ms 125528 KB Output is correct
83 Correct 429 ms 133384 KB Output is correct
84 Correct 447 ms 141128 KB Output is correct
85 Correct 469 ms 149100 KB Output is correct
86 Correct 500 ms 156868 KB Output is correct
87 Correct 526 ms 164800 KB Output is correct
88 Correct 560 ms 172552 KB Output is correct
89 Correct 584 ms 180256 KB Output is correct
90 Correct 14 ms 23756 KB Output is correct
91 Correct 14 ms 23828 KB Output is correct
92 Correct 15 ms 23756 KB Output is correct
93 Correct 14 ms 23756 KB Output is correct
94 Correct 15 ms 23756 KB Output is correct
95 Incorrect 15 ms 23724 KB Output isn't correct
96 Halted 0 ms 0 KB -