結果

問題 No.2319 Friends+
ユーザー akiaa11akiaa11
提出日時 2023-08-09 18:42:14
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 3,964 bytes
コンパイル時間 4,677 ms
コンパイル使用メモリ 276,708 KB
実行使用メモリ 11,264 KB
最終ジャッジ日時 2024-04-27 13:26:34
合計ジャッジ時間 22,884 ms
ジャッジサーバーID
(参考情報)
judge2 / judge4
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
6,812 KB
testcase_01 AC 1 ms
6,944 KB
testcase_02 WA -
testcase_03 WA -
testcase_04 WA -
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 WA -
testcase_16 WA -
testcase_17 AC 1 ms
6,940 KB
testcase_18 WA -
testcase_19 AC 346 ms
11,264 KB
testcase_20 AC 345 ms
9,728 KB
testcase_21 AC 332 ms
9,728 KB
testcase_22 AC 361 ms
9,728 KB
testcase_23 AC 336 ms
10,496 KB
testcase_24 AC 341 ms
10,240 KB
testcase_25 AC 334 ms
10,112 KB
testcase_26 AC 338 ms
9,856 KB
testcase_27 AC 331 ms
9,856 KB
testcase_28 AC 332 ms
9,856 KB
testcase_29 AC 332 ms
9,856 KB
testcase_30 AC 361 ms
9,728 KB
testcase_31 AC 349 ms
9,728 KB
testcase_32 AC 343 ms
9,856 KB
testcase_33 AC 336 ms
9,856 KB
testcase_34 AC 325 ms
9,728 KB
testcase_35 AC 330 ms
9,728 KB
testcase_36 AC 339 ms
9,600 KB
testcase_37 AC 342 ms
9,216 KB
testcase_38 AC 329 ms
9,728 KB
testcase_39 AC 335 ms
9,728 KB
testcase_40 AC 340 ms
9,728 KB
testcase_41 AC 333 ms
9,728 KB
testcase_42 AC 335 ms
9,856 KB
testcase_43 AC 355 ms
9,856 KB
testcase_44 AC 985 ms
10,496 KB
testcase_45 AC 345 ms
9,856 KB
testcase_46 AC 348 ms
9,472 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
#include <atcoder/all>
#define SELECTER(_1,_2,_3,SELECT,...) SELECT
#define rep1(i,n) for(int i=0;i<(int)n;++i)
#define rep2(i,a,n) for(int i=(int)a;i<(int)n;++i)
#define rep(...) SELECTER(__VA_ARGS__,rep2,rep1)(__VA_ARGS__)
#define RSELECTER(_1, _2, _3, RSELECT, ...) RSELECT
#define rrep1(i,n) for(int i=(int)n-1;i>=0;--i)
#define rrep2(i,a,n) for(int i=(int)n-1;i>=(int)a;--i)
#define rrep(...) RSELECTER(__VA_ARGS__, rrep2, rrep1)(__VA_ARGS__)
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define fi first
#define se second
#define PrintR LogOutput
#ifdef _DEBUG
#define Log(...) LogOutput(__VA_ARGS__)
#else
#define Log(...)
#endif
using namespace std;
using namespace atcoder;
using ll=long long;
using pii=pair<int,int>;
using pll=pair<long long,long long>;
using pdd=pair<long double,long double>;
using veci=vector<int>;
using vecpii=vector<pair<int,int>>;
using vecll=vector<long long>;
using vecpll=vector<pair<long long,long long>>;
using vecpdd=vector<pair<long double,long double>>;
using vecs=vector<string>;
using vecb=vector<bool>;
using vecd=vector<double>;
using tp=tuple<int,int,int>;
using tpll=tuple<ll,ll,ll>;
using mint=modint998244353;
using mint10=modint1000000007;
template<typename T, typename S>
istream& operator>>(istream& in, pair<T, S>& a){return in >> a.first >> a.second;}
template<typename T, typename S>
ostream& operator<<(ostream& out, const pair<T, S>& a){return out << a.first << ' ' << a.second;}
ostream& operator<<(ostream& out, const mint& a){return out << a.val();}
ostream& operator<<(ostream& out, const mint10& a){return out << a.val();}
ostream& operator<<(ostream& out, const modint& a){return out << a.val();}
template<typename T>
ostream& operator<<(ostream& out, const vector<T>& d){for(int i = 0 ; i < d.size() ; ++i) out << d[i] << (i == d.size() - 1 ? "" : " "); return out;}
template<typename T, typename S>
pair<T, S> operator+(const pair<T, S>& a, const pair<T, S>& b){return {a.fi + b.fi, a.se + b.se};}
template<typename T, typename S>
pair<T, S> operator-(const pair<T, S>& a, const pair<T, S>& b){return {a.fi - b.fi, a.se - b.se};}
template<class T> inline bool chmax(T& a,T b){if(a<b) {a=b;return true;} return false;}
template<class T> inline bool chmin(T& a,T b){if(a>b) {a=b;return true;} return false;}
bool Judge(int i, int j, int h, int w){return i < 0 || j < 0 || i >= h || j >= w;}

constexpr ll INF=numeric_limits<ll>::max() / 4;
constexpr ll MOD=998244353;
const int vi[] = {0, 1, 0, -1}, vj[] = {1, 0, -1, 0};

template<typename... Args>
void LogOutput(Args&&... args){
	stringstream ss;
	((ss << args << ' '), ...);
	cout << ss.str().substr(0, ss.str().length() - 1) << endl;
}
template<typename T>
void LogOutput(vector<vector<T>>& data){for(auto d : data) LogOutput(d);}

int main(){
	ios::sync_with_stdio(false);
	std::cin.tie(nullptr);
	int n, m;cin>>n>>m;
	veci p(n);
	rep(i, n) cin>>p[i], p[i]--;
	vecpii e(m);
	veci deg(n, 0);
	rep(i, m){
		int b, c;cin>>b>>c;
		b--, c--;
		e[i] = {b, c};
		deg[b]++;
		deg[c]++;
	}
	int sq = sqrt(n) + 1;
	vector<veci> g(n), g2(n);
	vector<map<int, int>> mp(n);
	rep(i, m){
		auto [u, v] = e[i];
		if(deg[u] < sq){
			if(deg[v] >= sq) mp[p[u]][v]++;
			g[u].push_back(v);
		}
		if(deg[v] < sq){
			if(deg[u] >= sq) mp[p[v]][u]++;
			g[v].push_back(u);
		}
		if(deg[u] >= sq && deg[v] >= sq){
			g2[u].push_back(v);
			g2[v].push_back(u);
		}
	}
	int q;cin>>q;
	rep(qi, q){
		int x, y;cin>>x>>y;
		x--, y--;
		if(p[x] == p[y]){
			cout<<"No"<<endl;
			continue;
		}
		bool u = false;
		if(deg[x] < sq){
			for(int nv : g[x]) if(p[nv] == p[y]){
				u = true;
				break;
			}
			if(u){
				for(int nv : g[x]) if(deg[nv] >= sq){
					mp[p[x]][nv]--;
					if(mp[p[x]][nv] == 0) mp[p[x]].erase(nv);
				}
			}
		}else{
			for(int nv : g2[x]) if(p[nv] == p[y]){
				u = true;
				break;
			}
			if(mp[p[y]].count(x)) u = true;
		}
		p[x] = p[y];
		if(u) cout<<"Yes"<<endl;
		else cout<<"No"<<endl;
	}
}
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