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Submission #342977

# Submission time Handle Problem Language Result Execution time Memory
342977 2021-01-03T10:09:06 Z leinad2 Village (BOI20_village) C++17
25 / 100
 116 ms 17260 KB 
#include<bits/stdc++.h>
using namespace std;
int n, i, j, k, a, b, ans[100010], A[100010], res, cent, sz[100010], dep[100010], in[100010], revin[100010], cnt;
vector<int>adj[100010];
void dfs(int v, int par, int depth)
{
    in[v]=++cnt;
    dep[v]=depth;
    sz[v]=1;
    for(int i=0;i<adj[v].size();i++)
    {
        int p=adj[v][i];
        if(p==par)continue;
        dfs(p, v, depth+1);
        sz[v]+=sz[p];
    }
}
int centroid(int v, int par)
{
    for(int i=0;i<adj[v].size();i++)
    {
        int p=adj[v][i];
        if(p==par)continue;
        if(sz[p]*2>n)
        {
            return centroid(p, v);
        }
    }
    return v;
}
int f(int x)
{
    return ((x+(n/2))%n==0?n:(x+(n/2))%n);
}
int main()
{
    for(scanf("%d", &n);++i<n;)
    {
        scanf("%d %d", &a, &b);
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    dfs(1, 0, 0);
    cent=centroid(1, 0);
    cnt=0;
    dfs(cent, 0, 0);
    for(i=0;i++<n;)res+=dep[i]*2;
    for(i=0;i++<n;)
    {
        revin[in[i]]=i;
    }
    for(i=0;i++<n;)
    {
        ans[revin[i]]=revin[f(i)];
    }
    printf("1 %d\n", res);
    for(i=0;i++<n;)printf("1 ");
    puts("");
    for(i=0;i++<n;)
    {
        printf("%d ", ans[i]);
    }
}

Compilation message

Village.cpp: In function 'void dfs(int, int, int)':
Village.cpp:10:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for(int i=0;i<adj[v].size();i++)
      |                 ~^~~~~~~~~~~~~~
Village.cpp: In function 'int centroid(int, int)':
Village.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(int i=0;i<adj[v].size();i++)
      |                 ~^~~~~~~~~~~~~~
Village.cpp: In function 'int main()':
Village.cpp:37:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   37 |     for(scanf("%d", &n);++i<n;)
      |         ~~~~~^~~~~~~~~~
Village.cpp:39:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   39 |         scanf("%d %d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 2668 KB Partially correct
2 Partially correct 2 ms 2668 KB Partially correct
3 Partially correct 2 ms 2668 KB Partially correct
4 Partially correct 2 ms 2668 KB Partially correct
5 Partially correct 2 ms 2668 KB Partially correct
6 Partially correct 2 ms 2668 KB Partially correct
7 Partially correct 2 ms 2668 KB Partially correct
8 Partially correct 2 ms 2668 KB Partially correct
9 Partially correct 2 ms 2668 KB Partially correct
10 Partially correct 2 ms 2668 KB Partially correct
11 Partially correct 2 ms 2668 KB Partially correct
12 Partially correct 2 ms 2668 KB Partially correct
13 Partially correct 2 ms 2668 KB Partially correct
14 Partially correct 2 ms 2668 KB Partially correct
15 Partially correct 2 ms 2668 KB Partially correct
16 Partially correct 2 ms 2668 KB Partially correct
17 Partially correct 2 ms 2668 KB Partially correct

Subtask #2
19.0 / 38.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 2668 KB Partially correct
2 Partially correct 2 ms 2668 KB Partially correct
3 Partially correct 2 ms 2668 KB Partially correct
4 Partially correct 3 ms 2796 KB Partially correct
5 Partially correct 3 ms 2796 KB Partially correct
6 Partially correct 3 ms 2796 KB Partially correct
7 Partially correct 3 ms 2796 KB Partially correct
8 Partially correct 3 ms 2796 KB Partially correct
9 Partially correct 3 ms 2796 KB Partially correct
10 Partially correct 3 ms 2796 KB Partially correct
11 Partially correct 3 ms 2796 KB Partially correct
12 Partially correct 3 ms 2796 KB Partially correct
13 Partially correct 2 ms 2796 KB Partially correct
14 Partially correct 3 ms 2796 KB Partially correct
15 Partially correct 2 ms 2796 KB Partially correct
16 Partially correct 3 ms 2796 KB Partially correct
17 Partially correct 3 ms 2796 KB Partially correct
18 Partially correct 2 ms 2796 KB Partially correct
19 Partially correct 2 ms 2796 KB Partially correct
20 Partially correct 2 ms 2796 KB Partially correct
21 Partially correct 3 ms 2796 KB Partially correct
22 Partially correct 2 ms 2796 KB Partially correct
23 Partially correct 2 ms 2796 KB Partially correct
24 Partially correct 3 ms 2796 KB Partially correct
25 Partially correct 2 ms 2668 KB Partially correct
26 Partially correct 3 ms 2796 KB Partially correct
27 Partially correct 2 ms 2668 KB Partially correct
28 Partially correct 3 ms 2796 KB Partially correct
29 Partially correct 3 ms 2796 KB Partially correct
30 Partially correct 2 ms 2796 KB Partially correct

Subtask #3
0.0 / 50.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 2668 KB Partially correct
2 Partially correct 2 ms 2668 KB Partially correct
3 Partially correct 2 ms 2668 KB Partially correct
4 Partially correct 2 ms 2668 KB Partially correct
5 Partially correct 2 ms 2668 KB Partially correct
6 Partially correct 2 ms 2668 KB Partially correct
7 Partially correct 2 ms 2668 KB Partially correct
8 Partially correct 2 ms 2668 KB Partially correct
9 Partially correct 2 ms 2668 KB Partially correct
10 Partially correct 2 ms 2668 KB Partially correct
11 Partially correct 2 ms 2668 KB Partially correct
12 Partially correct 2 ms 2668 KB Partially correct
13 Partially correct 2 ms 2668 KB Partially correct
14 Partially correct 2 ms 2668 KB Partially correct
15 Partially correct 2 ms 2668 KB Partially correct
16 Partially correct 2 ms 2668 KB Partially correct
17 Partially correct 2 ms 2668 KB Partially correct
18 Partially correct 2 ms 2668 KB Partially correct
19 Partially correct 2 ms 2668 KB Partially correct
20 Partially correct 2 ms 2668 KB Partially correct
21 Partially correct 3 ms 2796 KB Partially correct
22 Partially correct 3 ms 2796 KB Partially correct
23 Partially correct 3 ms 2796 KB Partially correct
24 Partially correct 3 ms 2796 KB Partially correct
25 Partially correct 3 ms 2796 KB Partially correct
26 Partially correct 3 ms 2796 KB Partially correct
27 Partially correct 3 ms 2796 KB Partially correct
28 Partially correct 3 ms 2796 KB Partially correct
29 Partially correct 3 ms 2796 KB Partially correct
30 Partially correct 2 ms 2796 KB Partially correct
31 Partially correct 3 ms 2796 KB Partially correct
32 Partially correct 2 ms 2796 KB Partially correct
33 Partially correct 3 ms 2796 KB Partially correct
34 Partially correct 3 ms 2796 KB Partially correct
35 Partially correct 2 ms 2796 KB Partially correct
36 Partially correct 2 ms 2796 KB Partially correct
37 Partially correct 2 ms 2796 KB Partially correct
38 Partially correct 3 ms 2796 KB Partially correct
39 Partially correct 2 ms 2796 KB Partially correct
40 Partially correct 2 ms 2796 KB Partially correct
41 Partially correct 3 ms 2796 KB Partially correct
42 Partially correct 2 ms 2668 KB Partially correct
43 Partially correct 3 ms 2796 KB Partially correct
44 Partially correct 2 ms 2668 KB Partially correct
45 Partially correct 3 ms 2796 KB Partially correct
46 Partially correct 3 ms 2796 KB Partially correct
47 Partially correct 2 ms 2796 KB Partially correct
48 Partially correct 76 ms 9196 KB Partially correct
49 Partially correct 116 ms 9836 KB Partially correct
50 Partially correct 88 ms 9836 KB Partially correct
51 Partially correct 68 ms 8428 KB Partially correct
52 Partially correct 101 ms 9836 KB Partially correct
53 Partially correct 80 ms 9196 KB Partially correct
54 Partially correct 57 ms 9836 KB Partially correct
55 Incorrect 106 ms 17260 KB Output isn't correct
56 Halted 0 ms 0 KB -