제출 #56751

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
56751		ramchandra	무제 (POI11_kon)	C++14	0 / 100	3076 ms	132096 KiB

Main

#include <bits/stdc++.h>
#define fo(i,a,b) for(ll i=a;i<b;i++)
#define vc vector
#define us unordered_set
#define pb push_back
#define in(x) ll x;cin>>x;
//#define DEBUG
#ifdef DEBUG
	#define dbg(x) cerr<<#x<<": "<<x<<endl;
#else
	#define dbg(x)
#endif
using namespace std;
using ll = long long;
const ll M = 1e9+7;
int main(){
	in(n);
	//in(m);
	vc<us<ll>> g(n);
	/*fo(i,0,m){
		in(a);in(b);a--;b--;
		#define ad(x,y) g[x].insert(y);
		ad(a,b);ad(b,a);
	}*/
	fo(i,0,n){
		in(de);
		fo(j,0,de){
			in(v);v--;
			g[i].insert(v);
		}
	}
	vc<ll> t(n);
	vc<us<ll>> q(3);
	fo(i,0,n){q[0].insert(i);}
	#define set(v,tp) if(t[v]==0){dbg(v);dbg(tp);q[0].erase(v);ch=true;t[v] = tp;q[tp].insert(v);}
	bool ch = false;
	while(!q[0].empty()){
		fo(i,0,3){dbg(i);dbg(q[i].size());}
		ll x = *q[0].begin();
		set(x,1);
		while(ch){
			ch = false;
			for(ll v:q[1]){ for(ll u:g[v]){ set(u,2);}}
			q[1].clear();
			for(ll v:q[2]){ fo(u,0,n){ if(!g[v].count(u)){ set(u,1);}}}
			q[2].clear();
		}
	}
	fo(i,0,n){q[t[i]].insert(i);}//;cerr<<t[i]<<" ";}
	//cerr<<endl;
	//fo(i,0,n){cerr<<"i: "<<g[i].size()<<endl;}
	vc<ll> c(4,0);
	for(ll v:q[1]){	if(g[v].size() == q[2].size()){	c[1]++;}}
	for(ll v:q[2]){	if(g[v].size() == q[2].size()-1){	c[2]++;}}
	for(ll v:q[2]){  if(g[v].size() == q[2].size()){ c[3]++;}}
	//cerr<<c[1]<<endl;cerr<<c[2]<<endl;cerr<<c[3]<<endl;
	ll ans = (1*1+c[1]+c[2]+c[1]*c[3])%M;
	cout<<ans<<endl;
}

• Subtask 1: 0 / 10
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