結果
| 問題 | No.1153 ねこちゃんゲーム |
| コンテスト | |
| ユーザー |
maroon_kuri
|
| 提出日時 | 2020-08-07 21:55:31 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 210 ms / 2,500 ms |
| コード長 | 5,681 bytes |
| 記録 | |
| コンパイル時間 | 3,014 ms |
| コンパイル使用メモリ | 207,996 KB |
| 最終ジャッジ日時 | 2025-01-12 16:47:05 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 40 |
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
#define si(x) int(x.size())
#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))
#ifdef LOCAL
void dmpr(ostream&os){os<<endl;}
template<class T,class... Args>
void dmpr(ostream&os,const T&t,const Args&... args){
os<<t<<" ";
dmpr(os,args...);
}
#define dmp2(...) dmpr(cerr,__LINE__,##__VA_ARGS__)
#else
#define dmp2(...) void(0)
#endif
using uint=unsigned;
using ull=unsigned long long;
template<class t,size_t n>
ostream& operator<<(ostream&os,const array<t,n>&a){
return os<<vc<t>(all(a));
}
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<<"}";
}
template<class t>
void print(t 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;
}
pi readpi(int off=0){
int a,b;cin>>a>>b;
return pi(a+off,b+off);
}
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"<<"\n";
#else
cout<<"Yes"<<"\n";
#endif
if(ex)exit(0);
}
void no(bool ex=true){
#ifdef CAPITAL
cout<<"NO"<<"\n";
#else
cout<<"No"<<"\n";
#endif
if(ex)exit(0);
}
void possible(bool ex=true){
#ifdef CAPITAL
cout<<"POSSIBLE"<<"\n";
#else
cout<<"Possible"<<"\n";
#endif
if(ex)exit(0);
}
void impossible(bool ex=true){
#ifdef CAPITAL
cout<<"IMPOSSIBLE"<<"\n";
#else
cout<<"Impossible"<<"\n";
#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;
}
ll mask(int i){
return (ll(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 mt19937_64 gen(chrono::steady_clock::now().time_since_epoch().count());
#endif
return uniform_int_distribution<ll>(l, r)(gen);
}
template<class t>
void myshuffle(vc<t>&a){
rep(i,si(a))swap(a[i],a[rand_int(0,i)]);
}
template<class t>
int lwb(const vc<t>&v,const t&a){
return lower_bound(all(v),a)-v.bg;
}
//AGC034E
//XX Opencup GP of Korea
//CF446D
//int(E)->to
template<class N,class E>
struct treedp{
const vvc<E>& g;
vc<N> a,b,res,sub,bus;
vi par;
void dfs1(int v,int p){
par[v]=p;
a[v].init(v);
E up;
for(auto e:g[v])
if(e!=p){
dfs1(e,v);
b[e]=a[v];
a[v]=a[v]+a[e];
}else
up=e;
sub[v]=a[v];
if(p!=-1)a[v]=a[v].up(up);
}
void dfs2(int v,int p,N cur){
per(i,g[v].size()){
auto e=g[v][i];
if(e==p)continue;
bus[e]=cur+b[e];
dfs2(e,v,bus[e].up(e));
cur=cur+a[e];
}
res[v]=cur;
}
treedp(const vvc<E>&gg):g(gg),a(si(g)),b(si(g)),res(si(g)),sub(si(g)),bus(si(g)),par(si(g)){
dfs1(0,-1);
N tmp;tmp.init(0);
dfs2(0,-1,tmp);
}
};
struct N{
int v;
void init(int){
v=0;
}
int getval()const{
return botbit(~v);
}
N up(int)const{
return N{1<<getval()};
}
N operator+(const N&r)const{
return N{v|r.v};
}
};
signed main(){
cin.tie(0);
ios::sync_with_stdio(0);
cout<<fixed<<setprecision(20);
int n,m;cin>>n>>m;
vi a=readvi(m,-1);
vvc<int> t(n);
rep(_,n-1){
int x,y;cin>>x>>y;
x--;y--;
t[x].pb(y);
t[y].pb(x);
}
treedp<N,int> dp(t);
int sum=0;
rep(i,m)sum^=dp.res[a[i]].getval();
if(sum){
vi vis(n);
rep(i,m)if(!vis[a[i]]){
vis[a[i]]=1;
int cur=sum^dp.res[a[i]].getval();
int u=-1;
for(auto to:t[a[i]]){
if(to==dp.par[a[i]]){
if(cur==dp.bus[a[i]].getval()){
u=to;
break;
}
}else{
if(cur==dp.sub[to].getval()){
u=to;
break;
}
}
}
if(u!=-1){
cout<<i+1<<" "<<u+1<<endl;
return 0;
}
}
assert(false);
}else{
cout<<"-1 -1\n";
}
}
maroon_kuri