Submission #1076054

#	Time	Username	Problem	Language	Result	Execution time	Memory
1076054		alexdd	Bali Sculptures (APIO15_sculpture)	C++17	100 / 100	96 ms	600 KiB

sculpture

#include<bits/stdc++.h>
using namespace std;
#define int long long
int n,a,b;
int y[2005],sump[2005];
bool verif(int lim)
{
    vector<vector<bool>> dp(n+2,vector<bool>(b+2,0));
    dp[0][0]=1;
    for(int i=1;i<=n;i++)
    {
        for(int cnt=1;cnt<=b;cnt++)
        {
            dp[i][cnt]=0;
            for(int j=0;j<i;j++)
            {
                if(dp[j][cnt-1] && (lim|(sump[i]-sump[j]))==lim)
                    dp[i][cnt]=1;
            }
        }
    }
    for(int i=a;i<=b;i++)
        if(dp[n][i])
            return 1;
    return 0;
}
bool verif1(int lim)
{
    vector<int> dp(n+2);
    dp[0]=0;
    for(int i=1;i<=n;i++)
    {
        dp[i]=b+1;
        for(int j=0;j<i;j++)
        {
            if((lim|(sump[i]-sump[j]))==lim)
                dp[i] = min(dp[i], dp[j]+1);
        }
    }
    if(dp[n]<=b)
        return 1;
    else
        return 0;
}
/**
dp[i][cnt] = 0/1
dp[i][cnt] |= dp[x][cnt-1], daca
*/
signed main()
{
    cin>>n>>a>>b;
    for(int i=1;i<=n;i++)
    {
        cin>>y[i];
        sump[i] = sump[i-1]+y[i];
    }
    if(a==1)
    {
        int pref=(1LL<<60)-1;
        for(int b=59;b>=0;b--)
        {
            pref -= (1LL<<b);
            if(!verif1(pref))
                pref += (1LL<<b);
        }
        cout<<pref;
    }
    else
    {
        int pref=(1LL<<60)-1;
        for(int b=59;b>=0;b--)
        {
            pref -= (1LL<<b);
            if(!verif(pref))
                pref += (1LL<<b);
        }
        cout<<pref;
    }
    return 0;
}

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