結果
問題 | No.1293 2種類の道路 |
ユーザー |
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提出日時 | 2020-11-20 22:10:10 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 62 ms / 2,000 ms |
コード長 | 4,760 bytes |
コンパイル時間 | 2,199 ms |
コンパイル使用メモリ | 205,876 KB |
最終ジャッジ日時 | 2025-01-16 02:24:35 |
ジャッジサーバーID (参考情報) |
judge1 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 22 |
ソースコード
#include <bits/stdc++.h>using namespace std;const long long MOD=1000000007;// const long long MOD=998244353;#define LOCAL#pragma region Macrostypedef long long ll;typedef __int128_t i128;typedef unsigned int uint;typedef unsigned long long ull;#define ALL(x) (x).begin(),(x).end()const int INF=1e9;const long long IINF=1e18;const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};const char dir[4]={'D','R','U','L'};template<typename T>istream &operator>>(istream &is,vector<T> &v){for (T &x:v) is >> x;return is;}template<typename T>ostream &operator<<(ostream &os,const vector<T> &v){for (int i=0;i<v.size();++i){os << v[i] << (i+1==v.size()?"": " ");}return os;}template<typename T,typename U>ostream &operator<<(ostream &os,const pair<T,U> &p){os << '(' << p.first << ',' << p.second << ')';return os;}template<typename T,typename U,typename V>ostream&operator<<(ostream &os,const tuple<T,U,V> &t){os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ')';return os;}template<typename T,typename U,typename V,typename W>ostream&operator<<(ostream &os,const tuple<T,U,V,W> &t){os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ',' << get<3>(t) << ')';return os;}template<typename T,typename U>ostream &operator<<(ostream &os,const map<T,U> &m){os << '{';for (auto itr=m.begin();itr!=m.end();){os << '(' << itr->first << ',' << itr->second << ')';if (++itr!=m.end()) os << ',';}os << '}';return os;}template<typename T,typename U>ostream &operator<<(ostream &os,const unordered_map<T,U> &m){os << '{';for (auto itr=m.begin();itr!=m.end();){os << '(' << itr->first << ',' << itr->second << ')';if (++itr!=m.end()) os << ',';}os << '}';return os;}template<typename T>ostream &operator<<(ostream &os,const set<T> &s){os << '{';for (auto itr=s.begin();itr!=s.end();){os << *itr;if (++itr!=s.end()) os << ',';}os << '}';return os;}template<typename T>ostream &operator<<(ostream &os,const multiset<T> &s){os << '{';for (auto itr=s.begin();itr!=s.end();){os << *itr;if (++itr!=s.end()) os << ',';}os << '}';return os;}template<typename T>ostream &operator<<(ostream &os,const unordered_set<T> &s){os << '{';for (auto itr=s.begin();itr!=s.end();){os << *itr;if (++itr!=s.end()) os << ',';}os << '}';return os;}template<typename T>ostream &operator<<(ostream &os,const deque<T> &v){for (int i=0;i<v.size();++i){os << v[i] << (i+1==v.size()?"": " ");}return os;}void debug_out(){cerr << '\n';}template<class Head,class... Tail>void debug_out(Head&& head,Tail&&... tail){cerr << head;if (sizeof...(Tail)>0) cerr << ", ";debug_out(move(tail)...);}#ifdef LOCAL#define debug(...) cerr << " ";\cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n';\cerr << " ";\debug_out(__VA_ARGS__)#else#define debug(...) 42#endiftemplate<typename T> T gcd(T x,T y){return y!=0?gcd(y,x%y):x;}template<typename T> T lcm(T x,T y){return x/gcd(x,y)*y;}template<class T1,class T2> inline bool chmin(T1 &a,T2 b){if (a>b){a=b; return true;} return false;}template<class T1,class T2> inline bool chmax(T1 &a,T2 b){if (a<b){a=b; return true;} return false;}#pragma endregionstruct UnionFind{int num;vector<int> par,rank;UnionFind(int n):num(n),par(n),rank(n,1){iota(par.begin(),par.end(),0);}int root(int x){return (par[x]==x?x:par[x]=root(par[x]));}bool merge(int x, int y){x=root(x); y=root(y);if (x==y) return false;if (rank[x]<rank[y]) swap(x,y);par[y]=x;rank[x]+=rank[y];--num;return true;}bool same(int x, int y){return root(x)==root(y);}int size(int x){return rank[root(x)];}int count(){return num;}};int main(){cin.tie(0);ios::sync_with_stdio(false);int N,D,W; cin >> N >> D >> W;UnionFind UF1(N),UF2(N);for (int i=0;i<D;++i){int a,b; cin >> a >> b;UF1.merge(--a,--b);}for (int i=0;i<W;++i){int c,d; cin >> c >> d;UF2.merge(--c,--d);}vector<set<int>> rs(N);vector<int> reach(N,0);for (int i=0;i<N;++i){int r=UF1.root(i);if (rs[r].count(UF2.root(i))) continue;rs[r].emplace(UF2.root(i));reach[r]+=UF2.size(i);}ll ans=0;for (int i=0;i<N;++i){if (UF1.root(i)==i){ans+=(ll)UF1.size(i)*(reach[i]-1);}}cout << ans << '\n';}