제출 #905884

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
905884		Faisal_Saqib	Bali Sculptures (APIO15_sculpture)	C++17	37 / 100	56 ms	788 KiB

sculpture

#include <iostream>
#include <set>
#include <algorithm>
#include <vector>
using namespace std;
#define ll long long
const ll inf=1e18;
const ll N=200;
ll aps[N];
ll pre[N];
ll dp[N][N];
bool posp[N][N];
int main()
{
	int n,a,b;
	cin>>n>>a>>b;
	for(int i=0;i<n;i++)
	{
		cin>>aps[i];
		pre[i+1]=aps[i]+pre[i];
	}
	ll pos=(1ll<<21)-1;
	for(int i=20;i>=0;i--)
	{
		ll new_pos=pos-(1ll<<i);
		// Can i spilt the array in segement so that the final_or let that be b so that the bit off in pos are off  in b
		// dp[i][j] let spilt the prefix i into j part so what is the minimum or possible
		for(int i=0;i<=n;i++)
			for(int j=0;j<=n;j++)
				dp[i][j]=inf;
		for(int i=0;i<=n;i++)
			for(int j=0;j<=n;j++)
				posp[i][j]=0;
		dp[0][0]=0;
		posp[0][0]=1;
		bool pos1=0;
		for(int i=1;i<=n;i++)
		{
			for(int j=1;j<=i;j++)
			{
				for(int k=0;k<i;k++)
				{
					if(posp[k][j-1])
					{
						bool das=1;
						ll np=(dp[k][j-1]|(pre[i]-pre[k]));
						for(int bit=20;bit>=0;bit--)
						{
							if((np&(1<<bit))>((new_pos&(1<<bit))))
							{
								das=0;
							}
						}
						if(das)
						{
							dp[i][j]=min(dp[i][j],(dp[k][j-1]|(pre[i]-pre[k])));
							posp[i][j]=1;
						}
					}
				}
				if(i==n and a<=j and j<=b and posp[i][j])
				{
					pos1=1;
				}
			}
		}
		if(pos1)
			pos=new_pos;
	}
	cout<<pos<<endl;
	return 0;
}

• Subtask 1: 0 / 9
• Subtask 2: 16 / 16
• Subtask 3: 21 / 21
• Subtask 4: 0 / 25
• Subtask 5: 0 / 29