結果
問題 | No.2563 色ごとのグループ |
ユーザー |
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提出日時 | 2023-12-02 15:38:07 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 586 ms / 2,000 ms |
コード長 | 2,794 bytes |
コンパイル時間 | 5,986 ms |
コンパイル使用メモリ | 324,192 KB |
実行使用メモリ | 51,048 KB |
最終ジャッジ日時 | 2024-09-26 19:02:28 |
合計ジャッジ時間 | 13,264 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 35 |
ソースコード
#pragma region header#include <bits/stdc++.h>#include <atcoder/all>using namespace std;using namespace atcoder;// clang-format offstruct Fast {Fast() {std::cin.tie(0); ios::sync_with_stdio(false);}} fast;inline void IN(void){return;}template <typename First, typename... Rest>void IN(First &first, Rest &...rest){cin >> first;IN(rest...);return;}template <typename T>istream &operator>>(istream &is, pair<T, T> &p){is >> p.first >> p.second;return is;}template <typename T>istream &operator>>(istream &is, vector<T> &v){for (auto &x : v)is >> x;return is;}template <typename T>ostream &operator<<(ostream &os, vector<T> &v){for (auto &x : v)os << x << " ";os << endl;return os;}// templetes//aliasusing ull = unsigned long long;using ll = long long;using vi = vector<int>;using vvi = vector<vi>;using vll = vector<ll>;using vvll = vector<vll>;using vb = vector<bool>;using vvb = vector<vb>;using vs = vector<string>;using pll = pair<ll, ll>;//define short#define vec vector#define all(obs) (obs).begin(), (obs).end()#define YESNO(cond) (cond) ? cout << "YES" << endl : cout << "NO" << endl;#define YesNo(cond) (cond) ? cout << "Yes" << endl : cout << "No" << endl;#define yesno(cond) (cond) ? cout << "yes" << endl : cout << "no" << endl;#define sortv(obs) sort(all(obs))#define rsortv(obs) reverse(sort(all(obs)))#define bitu(n,i) (((n)>>(i))&1)#define dig10(n) to_string(n).size()#define bcnt(n) __builtin_popcount(n)#define bcntll(n) __builtin_popcountll(n)#define F first#define S second#define pb push_back#define pq priority_queue//define loop#define rep(i, a,b) for(ll i = a; i < (b); i++)#define rrep(i, a,b) for(ll i = a; i >= (b); i--)//define INFconst ll INF = 1e18;template <typename T1,typename T2>inline void chmin(T1 &a,T2 b){if(a>b) a = b;}template <typename T1,typename T2>inline void chmax(T1 &a,T2 b){if(a<b) a = b;}#pragma endregion header// clang-format onint main(){ll n,m;cin >> n >> m;vll c(n);cin >> c;rep(i,0,n) c[i]--;//map<ll,pll> 頂点iは、色jのk番目の頂点vec<set<ll>> g(n);rep(i,0,n){g[c[i]].insert(i);}map<ll,pll> mp;rep(i,0,n){auto itr = g[i].begin();rep(j,0,g[i].size()){mp[*itr] = {i,j};itr++;}}vec<dsu> d(n);rep(i,0,n){d[i] = dsu(g[i].size());}rep(i,0,m){ll a,b;cin >> a >> b;a--;b--;if(c[a]==c[b]){d[c[a]].merge(mp[a].S,mp[b].S);}}ll ans=0;rep(i,0,n){if(g[i].size()==0) continue;ans+=d[i].groups().size()-1;}cout << ans << endl;}