oj.uz

Submission #854181

# Submission time Handle Problem Language Result Execution time Memory
854181 2023-09-26T10:00:16 Z 8pete8 Village (BOI20_village) C++14
100 / 100
 77 ms 25164 KB 
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<limits.h>
#include<cmath>
#include<set>
#include<algorithm>
#include<bitset>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
using namespace std;
#define int long long
const int mxn=1e5,mod=1000000007,lg=25,root=1000,inf=1e18;
vector<int>adj[mxn+10];
int subsize[mxn+10],n;
int ansmn[mxn+10],ansmx[mxn+10],up[mxn+10][lg+10],h[mxn+10];
vector<int>sub[mxn+10];
int cnt=0;
int ans2=0,ans1=0;
bool cmp(int a,int b){return subsize[a]>subsize[b];}
void build(int cur,int p){
    subsize[cur]=1;
    for(auto i:adj[cur]){
        if(i==p)continue;
        build(i,cur);
        ans2+=min(subsize[i],n-subsize[i]);//we claim we can achive this
        subsize[cur]+=subsize[i];
    }
}
int getcen(int cur,int p){
    for(auto i:adj[cur]){
        if(i==p)continue;
        if(subsize[i]*2>n)return getcen(i,cur);
    }
    return cur;
}
void dfs(int cur,int p){
    sub[cnt].pb(cur);
    for(auto i:adj[cur]){
        if(i==p)continue;
        dfs(i,cur);
    }
}
int solvemn(int cur,int p){
    vector<int>v;
    for(auto i:adj[cur]){
        if(i==p)continue;
        if(solvemn(i,cur))v.pb(i);
    }
    if(v.size()){
        ans1++;
        ansmn[cur]=v[0];
        for(int i=0;i<v.size()-1;i++)ansmn[v[i]]=v[i+1],ans1+=2;
        ansmn[v.back()]=cur;
        ans1++;
    }
    else return 1;
    return 0;
}
void solvemx(){
    int node=getcen(1,-1);
    priority_queue<pii>pq;
    for(auto i:adj[node]){
        dfs(i,node);
        pq.push({sub[cnt].size(),cnt});
        cnt++;
    }
    //for(auto i:sub)cout<<i<<"\n";
    int cur=node,tmp;
    ansmx[node]=sub[pq.top().s].back();
    cur=pq.top().s;
    pq.pop();
    while(!pq.empty()){
        ansmx[sub[cur].back()]=sub[pq.top().s].back();
        sub[cur].pop_back();
        tmp=cur;
        cur=pq.top().s;
        pq.pop();
        if(sub[tmp].size())pq.push({sub[tmp].size(),tmp});
    }
    ansmx[sub[cur].back()]=node;
}
int32_t main(){
    fastio
    cin>>n;
    for(int i=0;i<n-1;i++){
        int u,v;cin>>u>>v;
        adj[u].pb(v);
        adj[v].pb(u);
    }
    //fill(ansmn,ansmn+1+n,1);
    //fill(ansmx,ansmx+n+1,1);
    build(1,-1);
    solvemx();
    if(solvemn(1,-1)){
        int node=adj[1][0];
        ansmn[1]=node;
        int next=ansmn[node];
        while(ansmn[next]!=node)next=ansmn[next];
        ansmn[next]=1;
        ans1+=2;
    }
    cout<<ans1<<" ";
    cout<<ans2*2<<'\n';
    for(int i=1;i<=n;i++)cout<<ansmn[i]<<" ";
    cout<<'\n';
    for(int i=1;i<=n;i++)cout<<ansmx[i]<<" ";
}

Compilation message

Village.cpp: In function 'long long int solvemn(long long int, long long int)':
Village.cpp:70:22: 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]
   70 |         for(int i=0;i<v.size()-1;i++)ansmn[v[i]]=v[i+1],ans1+=2;
      |                     ~^~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Correct 4 ms 11096 KB Output is correct
4 Correct 2 ms 10840 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 2 ms 10840 KB Output is correct
7 Correct 2 ms 10840 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 3 ms 10844 KB Output is correct
11 Correct 2 ms 10840 KB Output is correct
12 Correct 2 ms 10844 KB Output is correct
13 Correct 2 ms 10840 KB Output is correct
14 Correct 2 ms 10844 KB Output is correct
15 Correct 2 ms 10840 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10840 KB Output is correct

Subtask #2
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 11096 KB Output is correct
5 Correct 3 ms 11096 KB Output is correct
6 Correct 2 ms 11096 KB Output is correct
7 Correct 2 ms 11096 KB Output is correct
8 Correct 2 ms 11096 KB Output is correct
9 Correct 2 ms 11100 KB Output is correct
10 Correct 2 ms 11096 KB Output is correct
11 Correct 2 ms 11100 KB Output is correct
12 Correct 2 ms 11100 KB Output is correct
13 Correct 2 ms 11100 KB Output is correct
14 Correct 2 ms 11096 KB Output is correct
15 Correct 2 ms 11100 KB Output is correct
16 Correct 2 ms 11096 KB Output is correct
17 Correct 2 ms 11096 KB Output is correct
18 Correct 2 ms 11096 KB Output is correct
19 Correct 2 ms 11100 KB Output is correct
20 Correct 2 ms 11096 KB Output is correct
21 Correct 2 ms 11096 KB Output is correct
22 Correct 3 ms 11096 KB Output is correct
23 Correct 2 ms 11100 KB Output is correct
24 Correct 2 ms 11096 KB Output is correct
25 Correct 2 ms 10840 KB Output is correct
26 Correct 2 ms 11096 KB Output is correct
27 Correct 2 ms 10844 KB Output is correct
28 Correct 2 ms 11096 KB Output is correct
29 Correct 2 ms 11100 KB Output is correct
30 Correct 2 ms 11312 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10840 KB Output is correct
3 Correct 4 ms 11096 KB Output is correct
4 Correct 2 ms 10840 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 2 ms 10840 KB Output is correct
7 Correct 2 ms 10840 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 3 ms 10844 KB Output is correct
11 Correct 2 ms 10840 KB Output is correct
12 Correct 2 ms 10844 KB Output is correct
13 Correct 2 ms 10840 KB Output is correct
14 Correct 2 ms 10844 KB Output is correct
15 Correct 2 ms 10840 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10840 KB Output is correct
18 Correct 2 ms 10840 KB Output is correct
19 Correct 2 ms 10840 KB Output is correct
20 Correct 2 ms 10844 KB Output is correct
21 Correct 2 ms 11096 KB Output is correct
22 Correct 3 ms 11096 KB Output is correct
23 Correct 2 ms 11096 KB Output is correct
24 Correct 2 ms 11096 KB Output is correct
25 Correct 2 ms 11096 KB Output is correct
26 Correct 2 ms 11100 KB Output is correct
27 Correct 2 ms 11096 KB Output is correct
28 Correct 2 ms 11100 KB Output is correct
29 Correct 2 ms 11100 KB Output is correct
30 Correct 2 ms 11100 KB Output is correct
31 Correct 2 ms 11096 KB Output is correct
32 Correct 2 ms 11100 KB Output is correct
33 Correct 2 ms 11096 KB Output is correct
34 Correct 2 ms 11096 KB Output is correct
35 Correct 2 ms 11096 KB Output is correct
36 Correct 2 ms 11100 KB Output is correct
37 Correct 2 ms 11096 KB Output is correct
38 Correct 2 ms 11096 KB Output is correct
39 Correct 3 ms 11096 KB Output is correct
40 Correct 2 ms 11100 KB Output is correct
41 Correct 2 ms 11096 KB Output is correct
42 Correct 2 ms 10840 KB Output is correct
43 Correct 2 ms 11096 KB Output is correct
44 Correct 2 ms 10844 KB Output is correct
45 Correct 2 ms 11096 KB Output is correct
46 Correct 2 ms 11100 KB Output is correct
47 Correct 2 ms 11312 KB Output is correct
48 Correct 44 ms 16352 KB Output is correct
49 Correct 45 ms 16908 KB Output is correct
50 Correct 46 ms 17032 KB Output is correct
51 Correct 35 ms 15500 KB Output is correct
52 Correct 52 ms 16848 KB Output is correct
53 Correct 41 ms 16368 KB Output is correct
54 Correct 28 ms 17740 KB Output is correct
55 Correct 77 ms 25164 KB Output is correct
56 Correct 53 ms 21068 KB Output is correct
57 Correct 64 ms 19532 KB Output is correct
58 Correct 51 ms 18108 KB Output is correct
59 Correct 50 ms 16896 KB Output is correct
60 Correct 51 ms 21016 KB Output is correct
61 Correct 43 ms 18180 KB Output is correct
62 Correct 55 ms 17232 KB Output is correct
63 Correct 45 ms 16732 KB Output is correct
64 Correct 51 ms 17272 KB Output is correct
65 Correct 48 ms 17292 KB Output is correct
66 Correct 48 ms 16880 KB Output is correct
67 Correct 36 ms 15920 KB Output is correct
68 Correct 37 ms 16464 KB Output is correct
69 Correct 46 ms 17584 KB Output is correct
70 Correct 35 ms 17112 KB Output is correct
71 Correct 31 ms 15320 KB Output is correct
72 Correct 31 ms 16080 KB Output is correct
73 Correct 44 ms 17572 KB Output is correct
74 Correct 45 ms 17008 KB Output is correct
75 Correct 65 ms 17212 KB Output is correct
76 Correct 44 ms 16988 KB Output is correct
77 Correct 48 ms 17096 KB Output is correct
78 Correct 28 ms 15060 KB Output is correct
79 Correct 32 ms 15844 KB Output is correct
80 Correct 66 ms 17364 KB Output is correct
81 Correct 50 ms 17472 KB Output is correct
82 Correct 42 ms 17116 KB Output is correct