oj.uz

Submission #342993

# Submission time Handle Problem Language Result Execution time Memory
342993 2021-01-03T10:34:49 Z leinad2 Village (BOI20_village) C++17
50 / 100
 167 ms 21612 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];
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);
}
void dfs2(int v, int par)
{
    vector<int>V;
    for(int i=0;i<adj[v].size();i++)
    {
        int p=adj[v][i];
        if(p==par)continue;
        dfs2(p, v);
        if(!A[p])V.push_back(p);
    }
    if(v==1&&V.size()==0)
    {
        ans2[ans2[adj[v][0]]]=1;
        ans2[1]=adj[v][0];
        res2+=2;
        return;
    }
    if(v==1&&V.size()==2)
    {
        res2+=4;
        ans2[v]=V[0];
        ans2[V[0]]=V[1];
        ans2[V[1]]=v;
        return;
    }
    if(V.size())
    {
        if(V.size()==2)
        {
            ans2[V[0]]=V[1];
            ans2[V[1]]=V[0];
            res2+=4;
        }
        else
        {
            A[v]=1;
            ans2[V[0]]=v;
            ans2[v]=V[0];
            res2+=2;
            if(V.size()>1)
            {
                for(i=1;i<V.size()-1;i++)
                {
                    ans2[V[i]]=V[i+1];
                    res2+=2;
                }
                ans2[V.back()]=V[1];
                res2+=2;
            }
        }
    }
}
main()
{
    for(scanf("%lld", &n);++i<n;)
    {
        scanf("%lld %lld", &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);
    dfs2(1, 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("%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: In function 'void dfs2(long long int, long long int)':
Village.cpp:39:18: 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]
   39 |     for(int i=0;i<adj[v].size();i++)
      |                 ~^~~~~~~~~~~~~~
Village.cpp:77:26: 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]
   77 |                 for(i=1;i<V.size()-1;i++)
      |                         ~^~~~~~~~~~~
Village.cpp: At global scope:
Village.cpp:88:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   88 | main()
      |      ^
Village.cpp: In function 'int main()':
Village.cpp:90:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   90 |     for(scanf("%lld", &n);++i<n;)
      |         ~~~~~^~~~~~~~~~~~
Village.cpp:92:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   92 |         scanf("%lld %lld", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 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 2 ms 2668 KB Output is correct
9 Correct 2 ms 2668 KB Output is correct
10 Correct 2 ms 2668 KB Output is correct
11 Correct 2 ms 2668 KB Output is correct
12 Correct 2 ms 2668 KB Output is correct
13 Partially correct 2 ms 2668 KB Partially correct
14 Correct 2 ms 2668 KB Output is correct
15 Partially correct 2 ms 2668 KB Partially correct
16 Correct 2 ms 2668 KB Output is correct
17 Partially correct 2 ms 2688 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 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 Correct 3 ms 2796 KB Output is 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 Correct 2 ms 2796 KB Output is correct
13 Correct 2 ms 2796 KB Output is correct
14 Correct 3 ms 2796 KB Output is correct
15 Correct 2 ms 2796 KB Output is 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 Correct 3 ms 2816 KB Output is correct
20 Partially correct 2 ms 2796 KB Partially correct
21 Correct 2 ms 2796 KB Output is correct
22 Partially correct 3 ms 2796 KB Partially correct
23 Partially correct 3 ms 2796 KB Partially correct
24 Partially correct 2 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 Correct 3 ms 2796 KB Output is correct
29 Correct 2 ms 2796 KB Output is correct
30 Correct 3 ms 2796 KB Output is 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 2 ms 2668 KB Output is correct
9 Correct 2 ms 2668 KB Output is correct
10 Correct 2 ms 2668 KB Output is correct
11 Correct 2 ms 2668 KB Output is correct
12 Correct 2 ms 2668 KB Output is correct
13 Partially correct 2 ms 2668 KB Partially correct
14 Correct 2 ms 2668 KB Output is correct
15 Partially correct 2 ms 2668 KB Partially correct
16 Correct 2 ms 2668 KB Output is correct
17 Partially correct 2 ms 2688 KB Partially 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 Correct 3 ms 2796 KB Output is 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 Correct 2 ms 2796 KB Output is correct
30 Correct 2 ms 2796 KB Output is correct
31 Correct 3 ms 2796 KB Output is correct
32 Correct 2 ms 2796 KB Output is 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 Correct 3 ms 2816 KB Output is correct
37 Partially correct 2 ms 2796 KB Partially correct
38 Correct 2 ms 2796 KB Output is correct
39 Partially correct 3 ms 2796 KB Partially correct
40 Partially correct 3 ms 2796 KB Partially correct
41 Partially correct 2 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 Correct 3 ms 2796 KB Output is correct
46 Correct 2 ms 2796 KB Output is correct
47 Correct 3 ms 2796 KB Output is correct
48 Partially correct 106 ms 12140 KB Partially correct
49 Partially correct 120 ms 13164 KB Partially correct
50 Partially correct 133 ms 13164 KB Partially correct
51 Partially correct 84 ms 10912 KB Partially correct
52 Partially correct 117 ms 13036 KB Partially correct
53 Partially correct 100 ms 12012 KB Partially correct
54 Correct 59 ms 11884 KB Output is correct
55 Correct 167 ms 21612 KB Output is correct
56 Partially correct 145 ms 17612 KB Partially correct
57 Partially correct 141 ms 16000 KB Partially correct
58 Partially correct 135 ms 14572 KB Partially correct
59 Partially correct 140 ms 13292 KB Partially correct
60 Correct 83 ms 12596 KB Output is correct
61 Correct 88 ms 12784 KB Output is correct
62 Correct 101 ms 13036 KB Output is correct
63 Correct 94 ms 12396 KB Output is correct
64 Partially correct 111 ms 13548 KB Partially correct
65 Partially correct 103 ms 13676 KB Partially correct
66 Partially correct 91 ms 12652 KB Partially correct
67 Correct 62 ms 10420 KB Output is correct
68 Partially correct 89 ms 12012 KB Partially correct
69 Correct 97 ms 13548 KB Output is correct
70 Partially correct 87 ms 12908 KB Partially correct
71 Partially correct 61 ms 10220 KB Partially correct
72 Partially correct 68 ms 11244 KB Partially correct
73 Correct 97 ms 13548 KB Output is correct
74 Correct 85 ms 12652 KB Output is correct
75 Partially correct 126 ms 12908 KB Partially correct
76 Correct 121 ms 13036 KB Output is correct
77 Correct 108 ms 13292 KB Output is correct
78 Partially correct 69 ms 9836 KB Partially correct
79 Correct 78 ms 10860 KB Output is correct
80 Partially correct 125 ms 12908 KB Partially correct
81 Partially correct 101 ms 13524 KB Partially correct
82 Correct 96 ms 13292 KB Output is correct