Submission #162452

#	Time	Username	Problem	Language	Result	Execution time	Memory
162452		MvC	Political Development (BOI17_politicaldevelopment)	C++11	0 / 100	3024 ms	101048 KiB

politicaldevelopment

#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=5e4+50;
const ll mod=1e9+7;
const ll p=37;
using namespace std;
int n,k,x,i,j,d[nmax],nr,rs,ts,t,c[nmax];
ll pw,hs;
//bitset<nmax>b[nmax],viz;
vector<int>g[nmax],vc,rnd,sz[15];
//map<vector<int>,int>mp;
vector<vector<int> >vec;
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	//srand(time(0));
	cin>>n>>k;
	for(i=1;i<=n;i++)
	{
		cin>>d[i];
		for(j=0;j<d[i];j++)cin>>c[j],c[j]++;
		sort(c,c+d[i]);
		for(j=0;j<(1<<d[i]);j++)
		{
			vc.clear();
			if(__builtin_popcount(j)+1>k)continue;
			for(t=0;t<d[i];t++)
			{
				if(j&(1<<t))
				{
					if(c[t]>i && (vc.empty() || vc.back()<i))vc.pb(i);
					vc.pb(c[t]);
				}
			}
			if((int)vc.size()<1)continue;
			if(vc.back()<i)vc.pb(i);
			if((int)vc.size()<2 || (int)vc.size()>k)continue;
			pw=1,hs=0;
			for(t=0;t<(int)vc.size();t++)
			{
				hs=(hs+pw*vc[t]%mod)%mod;
				pw=(pw*p)%mod;
			}
			sz[(int)vc.size()].pb(hs);
			//mp[vc]++;
			//if(mp[vc]==(int)vc.size())rs=max(rs,(int)vc.size());
		}
	}
	/*sort(vec.begin(),vec.end());
	nr=1;
	for(i=1;i<(int)vec.size();i++)
	{
		if(vec[i]==vec[i-1])nr++;
		else
		{
			if(nr==(int)vec[i-1].size())rs=max(rs,nr);
			nr=1;
		}
	}
	if(!vec.empty())if(nr==(int)vec.back().size())rs=max(rs,nr);*/
	for(i=k;i>=2;i--)
	{
		sort(sz[i].begin(),sz[i].end());
		nr=1;
		for(j=1;j<(int)sz[i].size();j++)
		{
			if(sz[i][j]==sz[i][j-1])nr++;
			else
			{
				if(nr==i)rc(i);
				nr=1;
			}
		}
		if(!sz[i].empty() && nr==i)rc(i);
	}
	rs=max(rs,1);
	cout<<rs<<endl;
	return 0;
}

Compilation message (stderr)

politicaldevelopment.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("O3")
 
politicaldevelopment.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("unroll-loops")

• Subtask 1: 0 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23