Submission #127606

#	Time	Username	Problem	Language	Result	Execution time	Memory
127606		mahmoudbadawy	Bali Sculptures (APIO15_sculpture)	C++17	100 / 100	152 ms	760 KiB

sculpture

#include <bits/stdc++.h>

using namespace std;

const int N=2005;

long long arr[N];
long long mem1[N/10][N/10],sum[N];
long long mem2[N];
int n,a,b;
long long cans;

long long go(int ind,int gr)
{
	if(ind>=n&&a<=gr&&gr<=b)
		return 1;
	if(ind>=n||gr>b)
		return 0;
	if(mem1[ind][gr]!=-1)
		return mem1[ind][gr];
	mem1[ind][gr]=0;
	for(int i=ind;i<n;i++)
	{
		long long sm=sum[i]-(ind?sum[ind-1]:0);
		if((sm&cans) > 0) continue;
		mem1[ind][gr]|=go(i+1,gr+1);
	}
	return mem1[ind][gr];
}

long long go(int ind)
{
	if(ind>=n)
		return 0;
	if(mem2[ind]!=-1)
		return mem2[ind];
	mem2[ind]=(1<<30);
	for(int i=ind;i<n;i++)
	{
		long long sm=sum[i]-(ind?sum[ind-1]:0);
		if((sm&cans) > 0) continue;
		mem2[ind]=min(mem2[ind],1+go(i+1));
	}
	return mem2[ind];
}

int main()
{
	cin >> n >> a >> b;
	for(int i=0;i<n;i++)
		cin >> arr[i];
	if(a==1)
	{
		long long ans=0;
		for(int in=42;in>=0;in--)
		{
			memset(mem2,-1,sizeof mem2);
			for(int i=0;i<n;i++)
				sum[i]=arr[i]+(i?sum[i-1]:0);
			cans|=(1LL<<in);
			if(go(0)>b)
			{
				cans^=(1LL<<in);
				ans|=(1LL<<in);
			}
		}
		cout << ans << endl;
	}
	else
	{
		long long ans=0;
		for(int in=42;in>=0;in--)
		{
			memset(mem1,-1,sizeof mem1);
			for(int i=0;i<n;i++)
				sum[i]=arr[i]+(i?sum[i-1]:0);
			cans|=(1LL<<in);
			if(!go(0,0))
			{
				cans^=(1LL<<in);
				ans|=(1LL<<in);
			}
		}
		cout << ans << endl;
	}
}

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 21 / 21
• Subtask 4: 25 / 25
• Subtask 5: 29 / 29