結果
| 問題 |
No.1153 ねこちゃんゲーム
|
| コンテスト | |
| ユーザー |
tute7627
|
| 提出日時 | 2020-08-07 22:51:15 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 5,077 bytes |
| コンパイル時間 | 18,362 ms |
| コンパイル使用メモリ | 305,196 KB |
| 最終ジャッジ日時 | 2025-01-12 17:42:07 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 MLE * 1 |
| other | AC * 30 TLE * 10 |
コンパイルメッセージ
main.cpp: In lambda function:
main.cpp:147:3: warning: control reaches end of non-void function [-Wreturn-type]
147 | };
| ^
ソースコード
//#define _GLIBCXX_DEBUG
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
#define lfs cout<<fixed<<setprecision(10)
#define ALL(a) (a).begin(),(a).end()
#define ALLR(a) (a).rbegin(),(a).rend()
#define spa << " " <<
#define fi first
#define se second
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define EB emplace_back
#define rep(i,n,m) for(ll i = (n); i < (ll)(m); i++)
#define rrep(i,n,m) for(ll i = (ll)(m) - 1; i >= (ll)(n); i--)
using ll = long long;
using ld = long double;
const ll MOD1 = 1e9+7;
const ll MOD9 = 998244353;
const ll INF = 1e18;
using P = pair<ll, ll>;
template<typename T1, typename T2>
bool chmin(T1 &a,T2 b){if(a>b){a=b;return true;}else return false;}
template<typename T1, typename T2>
bool chmax(T1 &a,T2 b){if(a<b){a=b;return true;}else return false;}
ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});}
void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}
void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;}
void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;}
template<typename T1,typename T2>
void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;}
template<typename T>
void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
{cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}};
void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
{for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}};
template<typename T>
void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;};
template<typename T>
vector<vector<T>>vec(ll x, ll y, T w){
vector<vector<T>>v(x,vector<T>(y,w));return v;}
ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;}
vector<ll>dx={1,-1,0,0,1,1,-1,-1};
vector<ll>dy={0,0,1,-1,1,-1,1,-1};
template<typename T>
vector<T> make_v(size_t a,T b){return vector<T>(a,b);}
template<typename... Ts>
auto make_v(size_t a,Ts... ts){
return vector<decltype(make_v(ts...))>(a,make_v(ts...));
}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2>&p){
return os << p.first << " " << p.second;
}
//mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());
template< typename sum_t, typename key_t >
struct ReRooting {
struct Edge {
int to;
key_t data;
sum_t dp, ndp;
};
using F = function< sum_t(sum_t, sum_t) >;
using G = function< sum_t(sum_t, key_t) >;
vector< vector< Edge > > g;
vector< sum_t > subdp, dp;
const sum_t ident;
const F f;
const G gg;
ReRooting(int V, const F f, const G g, const sum_t &ident)
: g(V), f(f), gg(g), ident(ident), subdp(V, ident), dp(V, ident) {}
void add_edge(int u, int v, const key_t &d) {
g[u].emplace_back((Edge) {v, d, ident, ident});
g[v].emplace_back((Edge) {u, d, ident, ident});
}
void add_edge_bi(int u, int v, const key_t &d, const key_t &e) {
g[u].emplace_back((Edge) {v, d, ident, ident});
g[v].emplace_back((Edge) {u, e, ident, ident});
}
void dfs_sub(int idx, int par) {
for(auto &e : g[idx]) {
if(e.to == par) continue;
dfs_sub(e.to, idx);
subdp[idx] = f(subdp[idx], gg(subdp[e.to], e.data));
}
}
void dfs_all(int idx, int par, const sum_t &top) {
sum_t buff{ident};
for(int i = 0; i < (int) g[idx].size(); i++) {
auto &e = g[idx][i];
e.ndp = buff;
e.dp = gg(par == e.to ? top : subdp[e.to], e.data);
buff = f(buff, e.dp);
}
dp[idx] = buff;
buff = ident;
for(int i = (int) g[idx].size() - 1; i >= 0; i--) {
auto &e = g[idx][i];
if(e.to != par) dfs_all(e.to, idx, f(e.ndp, buff));
e.ndp = f(e.ndp, buff);
buff = f(buff, e.dp);
}
}
vector< sum_t > build() {
dfs_sub(0, -1);
dfs_all(0, -1, ident);
return dp;
}
};
int main(){
cin.tie(nullptr);
ios_base::sync_with_stdio(false);
ll res=0,buf=0;
bool judge = true;
ll n,m;cin>>n>>m;
vector<ll>a(m);
rep(i,0,m)cin>>a[i],a[i]--;
using vi=vector<short>;
int sz=450;
auto f=[&](vi x,vi y){
for(auto z:y)x.EB(z);
return x;
};
auto f2=[&](vi x,bool w){
vector<bool>t(min(sz,(int)x.size()+1));
for(auto z:x)t[z]=true;
rep(i,0,t.size()){
if(!t[i]){
//cout<<i<<endl;
return vi(1,i);
}
}
};
vi iden;
ReRooting<vi,bool>reroot(n,f,f2,iden);
rep(i,0,n-1){
ll u,v;cin>>u>>v;u--;v--;
reroot.add_edge(u,v,0);
}
auto v=reroot.build();
vector<int>gr(n);
rep(i,0,n){
gr[i]=f2(v[i],0)[0];
}
//debug(gr,n);
int now=0;
rep(i,0,m){
now^=gr[a[i]];
}
if(now==0){
cout<<-1 spa -1<<endl;
return 0;
}
vector<bool>used(n);
rep(i,0,m){
if(used[a[i]])continue;
used[a[i]]=true;
now^=gr[a[i]];
for(auto e:reroot.g[a[i]]){
int tmpgr=e.dp[0];
//cout<<a[i] spa now spa tmpgr<<endl;
if(tmpgr==now){
cout<<i+1 spa e.to+1<<endl;
return 0;
}
}
now^=gr[a[i]];
}
return 0;
}
tute7627