oj.uz

Submission #343004

# Submission time Handle Problem Language Result Execution time Memory
343004 2021-01-03T10:47:21 Z leinad2 Village (BOI20_village) C++17
56 / 100
 132 ms 18924 KB 
#include<bits/stdc++.h>
#define int long long
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, res2, ans2[100010], dist[11][11];
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);
}
main()
{
    for(scanf("%lld", &n);++i<n;)
    {
        scanf("%lld %lld", &a, &b);
        adj[a].push_back(b);
        adj[b].push_back(a);
        if(n<=10)
        {
            dist[a][b]=dist[b][a]=1;
        }
    }
    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)];
    }
    if(n<=10)
    {
        vector<int>v;
        for(i=0;i++<n;)v.push_back(i);
        for(i=0;i++<n;)
        {
            for(j=0;j++<n;)
            {
                if(dist[i][j]==0)dist[i][j]=1e9;
            }
        }
        for(k=0;k++<n;)
        {
            for(i=0;i++<n;)
            {
                for(j=0;j++<n;)
                {
                    dist[i][j]=min(dist[i][j], dist[i][k]+dist[k][j]);
                }
            }
        }
        res2=1e9;
        do
        {
            int res3=0;
            for(i=0;i++<n;)
            {
                if(v[i-1]==i)
                {
                    goto next;
                }
                res3+=dist[i][v[i-1]];
            }
            if(res3<res2)
            {
                res2=res3;
                for(i=0;i++<n;)ans2[i]=v[i-1];
            }
            next:;
        }while(next_permutation(v.begin(), v.end()));
    }
    else
    {
        res2=1;
        for(i=0;i++<n;)ans2[i]=1;
    }
    printf("%lld %lld\n", res2, res);
    for(i=0;i++<n;)printf("%lld ", ans2[i]);
    puts("");
    for(i=0;i++<n;)
    {
        printf("%lld ", ans[i]);
    }
}

Compilation message

Village.cpp: In function 'void dfs(long long int, long long int, long long int)':
Village.cpp:11:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for(int i=0;i<adj[v].size();i++)
      |                 ~^~~~~~~~~~~~~~
Village.cpp: In function 'long long int centroid(long long int, long long int)':
Village.cpp:21:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int i=0;i<adj[v].size();i++)
      |                 ~^~~~~~~~~~~~~~
Village.cpp: At global scope:
Village.cpp:36:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   36 | main()
      |      ^
Village.cpp: In function 'int main()':
Village.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   38 |     for(scanf("%lld", &n);++i<n;)
      |         ~~~~~^~~~~~~~~~~~
Village.cpp:40:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   40 |         scanf("%lld %lld", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2668 KB Output is correct
2 Correct 2 ms 2668 KB Output is correct
3 Correct 2 ms 2668 KB Output is correct
4 Correct 2 ms 2668 KB Output is correct
5 Correct 2 ms 2668 KB Output is correct
6 Correct 2 ms 2668 KB Output is correct
7 Correct 2 ms 2668 KB Output is correct
8 Correct 3 ms 2668 KB Output is correct
9 Correct 9 ms 2668 KB Output is correct
10 Correct 72 ms 2668 KB Output is correct
11 Correct 70 ms 2668 KB Output is correct
12 Correct 72 ms 2668 KB Output is correct
13 Correct 70 ms 2668 KB Output is correct
14 Correct 70 ms 2796 KB Output is correct
15 Correct 70 ms 2924 KB Output is correct
16 Correct 70 ms 2684 KB Output is correct
17 Correct 72 ms 2668 KB Output is 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 2796 KB Partially correct
3 Partially correct 2 ms 2796 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 3 ms 2796 KB Partially correct
14 Partially correct 3 ms 2796 KB Partially correct
15 Partially correct 3 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 3 ms 2796 KB Partially correct
19 Partially correct 3 ms 2796 KB Partially correct
20 Partially correct 3 ms 2796 KB Partially correct
21 Partially correct 2 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 2 ms 2796 KB Partially correct
26 Partially correct 3 ms 2796 KB Partially correct
27 Partially correct 2 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 3 ms 2796 KB Partially correct

Subtask #3
25.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2668 KB Output is correct
2 Correct 2 ms 2668 KB Output is correct
3 Correct 2 ms 2668 KB Output is correct
4 Correct 2 ms 2668 KB Output is correct
5 Correct 2 ms 2668 KB Output is correct
6 Correct 2 ms 2668 KB Output is correct
7 Correct 2 ms 2668 KB Output is correct
8 Correct 3 ms 2668 KB Output is correct
9 Correct 9 ms 2668 KB Output is correct
10 Correct 72 ms 2668 KB Output is correct
11 Correct 70 ms 2668 KB Output is correct
12 Correct 72 ms 2668 KB Output is correct
13 Correct 70 ms 2668 KB Output is correct
14 Correct 70 ms 2796 KB Output is correct
15 Correct 70 ms 2924 KB Output is correct
16 Correct 70 ms 2684 KB Output is correct
17 Correct 72 ms 2668 KB Output is correct
18 Partially correct 2 ms 2668 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 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 3 ms 2796 KB Partially correct
31 Partially correct 3 ms 2796 KB Partially correct
32 Partially correct 3 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 3 ms 2796 KB Partially correct
36 Partially correct 3 ms 2796 KB Partially correct
37 Partially correct 3 ms 2796 KB Partially correct
38 Partially correct 2 ms 2796 KB Partially correct
39 Partially correct 3 ms 2796 KB Partially correct
40 Partially correct 3 ms 2796 KB Partially correct
41 Partially correct 3 ms 2796 KB Partially correct
42 Partially correct 2 ms 2796 KB Partially correct
43 Partially correct 3 ms 2796 KB Partially correct
44 Partially correct 2 ms 2796 KB Partially correct
45 Partially correct 3 ms 2796 KB Partially correct
46 Partially correct 3 ms 2796 KB Partially correct
47 Partially correct 3 ms 2796 KB Partially correct
48 Partially correct 90 ms 11116 KB Partially correct
49 Partially correct 104 ms 12012 KB Partially correct
50 Partially correct 112 ms 12140 KB Partially correct
51 Partially correct 77 ms 9956 KB Partially correct
52 Partially correct 109 ms 12012 KB Partially correct
53 Partially correct 88 ms 10988 KB Partially correct
54 Partially correct 49 ms 10476 KB Partially correct
55 Partially correct 132 ms 18924 KB Partially correct
56 Partially correct 121 ms 15340 KB Partially correct
57 Partially correct 126 ms 14316 KB Partially correct
58 Partially correct 116 ms 13036 KB Partially correct
59 Partially correct 103 ms 12140 KB Partially correct
60 Partially correct 74 ms 12128 KB Partially correct
61 Partially correct 82 ms 12124 KB Partially correct
62 Partially correct 93 ms 12268 KB Partially correct
63 Partially correct 82 ms 11756 KB Partially correct
64 Partially correct 103 ms 12396 KB Partially correct
65 Partially correct 85 ms 12396 KB Partially correct
66 Partially correct 81 ms 11756 KB Partially correct
67 Partially correct 55 ms 9704 KB Partially correct
68 Partially correct 74 ms 11116 KB Partially correct
69 Partially correct 88 ms 12524 KB Partially correct
70 Partially correct 79 ms 11884 KB Partially correct
71 Partially correct 55 ms 9452 KB Partially correct
72 Partially correct 64 ms 10476 KB Partially correct
73 Partially correct 87 ms 12524 KB Partially correct
74 Partially correct 75 ms 11628 KB Partially correct
75 Partially correct 106 ms 12524 KB Partially correct
76 Partially correct 105 ms 11884 KB Partially correct
77 Partially correct 102 ms 12268 KB Partially correct
78 Partially correct 57 ms 9068 KB Partially correct
79 Partially correct 67 ms 9964 KB Partially correct
80 Partially correct 114 ms 12524 KB Partially correct
81 Partially correct 94 ms 12396 KB Partially correct
82 Partially correct 93 ms 12268 KB Partially correct