제출 #368957

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
368957	2021-02-20 08:19:11	YJU	Duathlon (APIO18_duathlon)	C++14	31 / 100	245 ms	70332 KiB

count_triplets

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#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector,Ofast")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=1e6+5;
const ld pi=acos(-1);
const ll INF=(1LL<<60);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()
ll n,m,x,y;
ll low[N],depth[N],cnt=0,ptr,w[N],ans,sz[N];
vector<ll> G[N],v[N];
ll stk[N],now;
void DFS1(ll nd,ll pa){
  ++cnt;
 
 
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