Submission #162471

#	Time	Username	Problem	Language	Result	Execution time	Memory
162471		MvC	Political Development (BOI17_politicaldevelopment)	C++11	0 / 100	2951 ms	22080 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=611953;
const ll p=37;
using namespace std;
int n,k,x,i,j,d[nmax],nr,rs=1,t,c[nmax],ls,ts;
ll pw,hs;
int sz[15][mod+5];
vector<int>rnd;
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]);
		rnd.clear();
		for(j=0;j<(1<<d[i]);j++)rnd.pb(j);
		random_shuffle(rnd.begin(),rnd.end());
		for(ts=0;ts<(1<<d[i]);ts++)
		{
			j=rnd[ts];
			if(__builtin_popcount(j)+1>k)continue;
			ls=-1;
			nr=0;
			pw=1,hs=0;
			for(t=0;t<d[i];t++)
			{
				if(j&(1<<t))
				{
					if(c[t]>i && ls<i)
					{
						hs=(hs+i*pw%mod)%mod;
						pw=(pw*p)%mod;
						nr++;
					}
					hs=(hs+c[t]*pw%mod)%mod;
					pw=(pw*p)%mod;
					ls=c[t];
					nr++;
				}
			}
			if(ls<i && ls!=-1)
			{
				hs=(hs+pw*i%mod)%mod;
				nr++;
			}
			if(nr<2)continue;
			sz[nr][hs]++;
			if(sz[nr][hs]==nr)rs=max(rs,nr);
			if(rs==k)rc(rs);
			if(clock() / (double) CLOCKS_PER_SEC>2.95)rc(rs);
		}
	}
	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