oj.uz

Submission #254983

# Submission time Handle Problem Language Result Execution time Memory
254983 2020-07-31T00:49:38 Z kimbj0709 Village (BOI20_village) C++14
100 / 100
 184 ms 21156 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define maxn 100050
#define f first
#define s second
vector<vector<int> > adj(maxn);
vector<int> subtree_size(maxn,0);
vector<int> pos(maxn,0);
int currcnt = 1;
int n,input1,input2;
int centroid = 0;
void dfs1(int node,int parent){//used to find subtree size
    subtree_size[node] = 1;
    pos[node] = currcnt;
    currcnt++;
    for(auto k:adj[node]){
        if(k==parent){
            continue;
        }
        dfs1(k,node);
        subtree_size[node] += subtree_size[k];
    }
    return;
}
vector<int> reroute(maxn,1);
int mindist = 0;
void dfs2(int node,int parent){//used to find optimal ordering
    for(auto k:adj[node]){
        if(k==parent){
            continue;
        }
        dfs2(k,node);
    }
    if(reroute[node]==node&&parent!=-1){
        swap(reroute[node],reroute[parent]);
        mindist++;
    }
    if(reroute[node]==node&&parent==-1){
        swap(reroute[node],reroute[adj[node][0]]);
        mindist++;
    }
    return;
}
vector<int> dist(maxn,0);
void dfs3(int node,int parent,int distt){
    dist[node] = distt;
    for(auto k:adj[node]){
        if(k!=parent){
            dfs3(k,node,distt+1);
        }
    }
}
void dfs4(int node,int parent){
    bool can = 1;
    for(auto k:adj[node]){
        if(k!=parent){
            dfs4(k,node);
            if(subtree_size[k]>(n/2)){
                can = 0;
            }
        }
    }
    if(n-subtree_size[node]>(n/2)){
        can = 0;
    }
    if(can){
        centroid = node;
    }
}
int maxdist = 0;
void dfs5(int node,int parent){
    for(auto k:adj[node]){
        if(k!=parent){
            dfs5(k,node);
            maxdist += subtree_size[k];
        }
    }
}
vector<int> nodes(maxn);
vector<int> ipos(maxn*2);
int position = 0;
void dfs6(int node,int parent){
    ipos[position] = node;
    ipos[position+n] = node;
    nodes[node] = position; 
    position++;
    for(auto k:adj[node]){
        if(k!=parent){
            dfs6(k,node);
        }
    }
}
vector<int> arrangement(maxn,0);
int32_t main(){
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    for(int i=0;i<maxn;i++){
        reroute[i] = i;
    }
    cin >> n;
    for(int i=0;i<n-1;i++){
        cin >> input1 >> input2;
        adj[input1].push_back(input2);
        adj[input2].push_back(input1);
    }
    int root = -1;
    for(int i=1;i<=n;i++){
        if(adj[i].size()==(int)1){
            root = i;
        }
    }
    dfs1(root,-1);
    dfs2(root,-1);
    dfs4(root,-1);
    dfs1(centroid,-1);
    dfs5(centroid,-1);
    int tt = 0;
    dfs6(centroid,-1);
    for(int i=1;i<=n;i++){
      arrangement[ipos[nodes[i]+(n/2)]] = i;
    }
    
    cout << mindist*2 << " " << maxdist*2 << "\n";
    for(int i=1;i<=n;i++){
        cout << reroute[i] << " ";
        //cout << i << " ";
    }
    cout << "\n";
    for(int i=1;i<=n;i++){
        //cout << 1 << " ";
        cout << arrangement[i] << ' ';
        //cout << i << " ";
    }
 
}

Compilation message

Village.cpp: In function 'int32_t main()':
Village.cpp:118:9: warning: unused variable 'tt' [-Wunused-variable]
     int tt = 0;
         ^~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8960 KB Output is correct
2 Correct 5 ms 8960 KB Output is correct
3 Correct 5 ms 8960 KB Output is correct
4 Correct 5 ms 8960 KB Output is correct
5 Correct 5 ms 8960 KB Output is correct
6 Correct 5 ms 8960 KB Output is correct
7 Correct 5 ms 8960 KB Output is correct
8 Correct 5 ms 8960 KB Output is correct
9 Correct 5 ms 8960 KB Output is correct
10 Correct 5 ms 8960 KB Output is correct
11 Correct 5 ms 8960 KB Output is correct
12 Correct 5 ms 8960 KB Output is correct
13 Correct 5 ms 8960 KB Output is correct
14 Correct 5 ms 8960 KB Output is correct
15 Correct 5 ms 8960 KB Output is correct
16 Correct 5 ms 8960 KB Output is correct
17 Correct 5 ms 8960 KB Output is correct

Subtask #2
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8960 KB Output is correct
2 Correct 5 ms 8960 KB Output is correct
3 Correct 6 ms 8960 KB Output is correct
4 Correct 6 ms 8988 KB Output is correct
5 Correct 6 ms 8960 KB Output is correct
6 Correct 6 ms 8960 KB Output is correct
7 Correct 6 ms 9088 KB Output is correct
8 Correct 6 ms 8960 KB Output is correct
9 Correct 6 ms 8960 KB Output is correct
10 Correct 6 ms 9088 KB Output is correct
11 Correct 5 ms 9088 KB Output is correct
12 Correct 6 ms 8960 KB Output is correct
13 Correct 8 ms 8960 KB Output is correct
14 Correct 8 ms 8960 KB Output is correct
15 Correct 8 ms 8960 KB Output is correct
16 Correct 5 ms 8960 KB Output is correct
17 Correct 6 ms 8960 KB Output is correct
18 Correct 5 ms 8960 KB Output is correct
19 Correct 5 ms 8960 KB Output is correct
20 Correct 5 ms 8960 KB Output is correct
21 Correct 6 ms 8960 KB Output is correct
22 Correct 5 ms 9088 KB Output is correct
23 Correct 6 ms 8960 KB Output is correct
24 Correct 6 ms 8960 KB Output is correct
25 Correct 5 ms 8960 KB Output is correct
26 Correct 6 ms 8960 KB Output is correct
27 Correct 5 ms 8960 KB Output is correct
28 Correct 6 ms 8960 KB Output is correct
29 Correct 5 ms 8960 KB Output is correct
30 Correct 5 ms 8960 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8960 KB Output is correct
2 Correct 5 ms 8960 KB Output is correct
3 Correct 5 ms 8960 KB Output is correct
4 Correct 5 ms 8960 KB Output is correct
5 Correct 5 ms 8960 KB Output is correct
6 Correct 5 ms 8960 KB Output is correct
7 Correct 5 ms 8960 KB Output is correct
8 Correct 5 ms 8960 KB Output is correct
9 Correct 5 ms 8960 KB Output is correct
10 Correct 5 ms 8960 KB Output is correct
11 Correct 5 ms 8960 KB Output is correct
12 Correct 5 ms 8960 KB Output is correct
13 Correct 5 ms 8960 KB Output is correct
14 Correct 5 ms 8960 KB Output is correct
15 Correct 5 ms 8960 KB Output is correct
16 Correct 5 ms 8960 KB Output is correct
17 Correct 5 ms 8960 KB Output is correct
18 Correct 5 ms 8960 KB Output is correct
19 Correct 5 ms 8960 KB Output is correct
20 Correct 6 ms 8960 KB Output is correct
21 Correct 6 ms 8988 KB Output is correct
22 Correct 6 ms 8960 KB Output is correct
23 Correct 6 ms 8960 KB Output is correct
24 Correct 6 ms 9088 KB Output is correct
25 Correct 6 ms 8960 KB Output is correct
26 Correct 6 ms 8960 KB Output is correct
27 Correct 6 ms 9088 KB Output is correct
28 Correct 5 ms 9088 KB Output is correct
29 Correct 6 ms 8960 KB Output is correct
30 Correct 8 ms 8960 KB Output is correct
31 Correct 8 ms 8960 KB Output is correct
32 Correct 8 ms 8960 KB Output is correct
33 Correct 5 ms 8960 KB Output is correct
34 Correct 6 ms 8960 KB Output is correct
35 Correct 5 ms 8960 KB Output is correct
36 Correct 5 ms 8960 KB Output is correct
37 Correct 5 ms 8960 KB Output is correct
38 Correct 6 ms 8960 KB Output is correct
39 Correct 5 ms 9088 KB Output is correct
40 Correct 6 ms 8960 KB Output is correct
41 Correct 6 ms 8960 KB Output is correct
42 Correct 5 ms 8960 KB Output is correct
43 Correct 6 ms 8960 KB Output is correct
44 Correct 5 ms 8960 KB Output is correct
45 Correct 6 ms 8960 KB Output is correct
46 Correct 5 ms 8960 KB Output is correct
47 Correct 5 ms 8960 KB Output is correct
48 Correct 90 ms 13560 KB Output is correct
49 Correct 110 ms 14072 KB Output is correct
50 Correct 107 ms 13944 KB Output is correct
51 Correct 71 ms 12792 KB Output is correct
52 Correct 109 ms 13944 KB Output is correct
53 Correct 88 ms 13432 KB Output is correct
54 Correct 52 ms 15096 KB Output is correct
55 Correct 184 ms 21156 KB Output is correct
56 Correct 143 ms 17400 KB Output is correct
57 Correct 132 ms 15588 KB Output is correct
58 Correct 174 ms 14584 KB Output is correct
59 Correct 154 ms 14072 KB Output is correct
60 Correct 63 ms 14060 KB Output is correct
61 Correct 71 ms 14056 KB Output is correct
62 Correct 82 ms 14328 KB Output is correct
63 Correct 73 ms 13944 KB Output is correct
64 Correct 95 ms 14328 KB Output is correct
65 Correct 82 ms 14456 KB Output is correct
66 Correct 72 ms 13948 KB Output is correct
67 Correct 50 ms 12788 KB Output is correct
68 Correct 72 ms 13688 KB Output is correct
69 Correct 78 ms 14456 KB Output is correct
70 Correct 70 ms 14072 KB Output is correct
71 Correct 51 ms 12792 KB Output is correct
72 Correct 63 ms 13304 KB Output is correct
73 Correct 85 ms 14456 KB Output is correct
74 Correct 70 ms 13944 KB Output is correct
75 Correct 138 ms 14456 KB Output is correct
76 Correct 124 ms 13816 KB Output is correct
77 Correct 122 ms 14456 KB Output is correct
78 Correct 81 ms 12408 KB Output is correct
79 Correct 67 ms 13000 KB Output is correct
80 Correct 107 ms 14456 KB Output is correct
81 Correct 86 ms 14584 KB Output is correct
82 Correct 88 ms 14072 KB Output is correct