結果
| 問題 |
No.912 赤黒木
|
| コンテスト | |
| ユーザー |
maroon_kuri
|
| 提出日時 | 2019-10-18 22:29:54 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 222 ms / 3,000 ms |
| コード長 | 3,885 bytes |
| コンパイル時間 | 1,915 ms |
| コンパイル使用メモリ | 174,080 KB |
| 実行使用メモリ | 51,712 KB |
| 最終ジャッジ日時 | 2024-06-25 17:34:42 |
| 合計ジャッジ時間 | 7,850 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 30 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
using ll=long long;
#define int ll
#define rng(i,a,b) for(int i=int(a);i<int(b);i++)
#define rep(i,b) rng(i,0,b)
#define gnr(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define per(i,b) gnr(i,0,b)
#define pb push_back
#define eb emplace_back
#define a first
#define b second
#define bg begin()
#define ed end()
#define all(x) x.bg,x.ed
#ifdef LOCAL
#define dmp(x) cerr<<__LINE__<<" "<<#x<<" "<<x<<endl
#else
#define dmp(x) void(0)
#endif
template<class t,class u> void chmax(t&a,u b){if(a<b)a=b;}
template<class t,class u> void chmin(t&a,u b){if(b<a)a=b;}
template<class t> using vc=vector<t>;
template<class t> using vvc=vc<vc<t>>;
using pi=pair<int,int>;
using vi=vc<int>;
template<class t,class u>
ostream& operator<<(ostream& os,const pair<t,u>& p){
return os<<"{"<<p.a<<","<<p.b<<"}";
}
template<class t> ostream& operator<<(ostream& os,const vc<t>& v){
os<<"{";
for(auto e:v)os<<e<<",";
return os<<"}";
}
#define mp make_pair
#define mt make_tuple
#define one(x) memset(x,-1,sizeof(x))
#define zero(x) memset(x,0,sizeof(x))
using uint=unsigned;
using ull=unsigned long long;
template<int i,class T>
void print_tuple(ostream&,const T&){
}
template<int i,class T,class H,class ...Args>
void print_tuple(ostream&os,const T&t){
if(i)os<<",";
os<<get<i>(t);
print_tuple<i+1,T,Args...>(os,t);
}
template<class ...Args>
ostream& operator<<(ostream&os,const tuple<Args...>&t){
os<<"{";
print_tuple<0,tuple<Args...>,Args...>(os,t);
return os<<"}";
}
void print(ll x,int suc=1){
cout<<x;
if(suc==1)
cout<<"\n";
if(suc==2)
cout<<" ";
}
ll read(){
ll i;
cin>>i;
return i;
}
vi readvi(int n,int off=0){
vi v(n);
rep(i,n)v[i]=read()+off;
return v;
}
template<class T>
void print(const vector<T>&v,int suc=1){
rep(i,v.size())
print(v[i],i==int(v.size())-1?suc:2);
}
string readString(){
string s;
cin>>s;
return s;
}
template<class T>
T sq(const T& t){
return t*t;
}
//#define CAPITAL
void yes(bool ex=true){
#ifdef CAPITAL
cout<<"YES"<<endl;
#else
cout<<"Yes"<<endl;
#endif
if(ex)exit(0);
}
void no(bool ex=true){
#ifdef CAPITAL
cout<<"NO"<<endl;
#else
cout<<"No"<<endl;
#endif
if(ex)exit(0);
}
constexpr ll ten(int n){
return n==0?1:ten(n-1)*10;
}
const ll infLL=LLONG_MAX/3;
#ifdef int
const int inf=infLL;
#else
const int inf=INT_MAX/2-100;
#endif
int topbit(signed t){
return t==0?-1:31-__builtin_clz(t);
}
int topbit(ll t){
return t==0?-1:63-__builtin_clzll(t);
}
int botbit(signed a){
return a==0?32:__builtin_ctz(a);
}
int botbit(ll a){
return a==0?64:__builtin_ctzll(a);
}
int popcount(signed t){
return __builtin_popcount(t);
}
int popcount(ll t){
return __builtin_popcountll(t);
}
bool ispow2(int i){
return i&&(i&-i)==i;
}
int mask(int i){
return (int(1)<<i)-1;
}
bool inc(int a,int b,int c){
return a<=b&&b<=c;
}
template<class t> void mkuni(vc<t>&v){
sort(all(v));
v.erase(unique(all(v)),v.ed);
}
ll rand_int(ll l, ll r) { //[l, r]
#ifdef LOCAL
static mt19937_64 gen;
#else
static random_device rd;
static mt19937_64 gen(rd());
#endif
return uniform_int_distribution<ll>(l, r)(gen);
}
const int nmax=200010;
vi t[nmax];
int f[nmax];
int dp[nmax][2][3];
void dfs(int v,int p){
rep(i,2)rep(j,3)
dp[v][i][j]=inf;
if(f[v]){
dp[v][1][0]=0;
dp[v][0][1]=0;
}else{
dp[v][0][0]=0;
}
for(auto c:t[v])if(c!=p){
dfs(c,v);
int tmp[2][3]{};
rep(i,2)rep(j,3)
tmp[i][j]=inf;
rep(i,2)rep(j,3)rep(k,2)rep(l,3){
int w=dp[v][i][j]+dp[c][k][l]+k;
if(j+l<=2)
chmin(tmp[(i+k)%2][j+l],w);
}
rep(i,2)rep(j,3)
dp[v][i][j]=tmp[i][j];
}
}
signed main(){
cin.tie(0);
ios::sync_with_stdio(0);
cout<<fixed<<setprecision(20);
int n;cin>>n;
rep(_,n-1){
int a,b;cin>>a>>b;
a--;b--;
t[a].pb(b);
t[b].pb(a);
}
rep(_,(n-1)*2){
int a;cin>>a;
a--;
f[a]^=1;
}
dfs(0,-1);
cout<<dp[0][0][2]+n-1<<endl;
}
maroon_kuri