제출 #734868

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
734868	2023-05-03 07:38:42	keisuke6	철인 이종 경기 (APIO18_duathlon)	C++14	23 / 100	157 ms	14392 KiB

count_triplets

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#include <bits/stdc++.h>
using namespace std;
#define int long long
struct Unionfind{
  vector<int> par, siz;
  //初期化
  Unionfind(int n) : par(n,-1) , siz(n,1) {}
  int root(int x) {
    if(par[x] == -1) return x;
    else return par[x] = root(par[x]);
  }
  bool issame(int x,int y) {
    return root(x) == root(y);
  }
  bool unite(int x, int y){
    x = root(x); y = root(y);
    if(x ==  y) return false;
    if(siz[x] < siz[y]) swap(x,y);
    par[y] =  x;
    siz[x] += siz[y];
    return  true;
  }
  int size(int x) {
    return siz[root(x)];
  }
};
int N,M;
vector<vector<int>> G(100100);
vector<int> A(100100,0);
void f(int u, int p){
 
 
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