Submission #646691

#	Time	Username	Problem	Language	Result	Execution time	Memory
646691		Tenis0206	Bali Sculptures (APIO15_sculpture)	C++11	100 / 100	229 ms	456 KiB

sculpture

#include <bits/stdc++.h>
#define int long long

using namespace std;

const int oo = INT_MAX;

int n,a,b;

int v[100005];
int sp[100005];

int dp[100005];
bool dp2[105][105];

void solve_1()
{
    int val = 0;
    for(int bit=60; bit>=0; bit--)
    {
        for(int i=1; i<=n; i++)
        {
            dp[i] = oo;
        }
        for(int i=1; i<=n; i++)
        {
            for(int j=i-1; j>=0; j--)
            {
                int sum = sp[i] - sp[j];
                if(((val >> bit) | (sum >> bit)) != (val >> bit))
                {
                    continue;
                }
                dp[i] = min(dp[i],1 + dp[j]);
            }
        }
        if(dp[n] > b)
        {
            val += (1LL<<bit);
        }
    }
    cout<<val<<'\n';
}

void solve()
{
    int val = 0;
    for(int bit=60; bit>=0; bit--)
    {
        dp2[0][0] = true;
        for(int i=1; i<=n; i++)
        {
            for(int nr=1; nr<=b; nr++)
            {
                dp2[i][nr] = false;
                for(int j=i-1; j>=0; j--)
                {
                    int sum = sp[i] - sp[j];
                    if(((val >> bit) | (sum >> bit)) != (val >> bit))
                    {
                        continue;
                    }
                    dp2[i][nr] |= dp2[j][nr-1];
                }
            }
        }
        bool ok = false;
        for(int i=a;i<=b;i++)
        {
            if(dp2[n][i])
            {
                ok = true;
            }
        }
        if(!ok)
        {
            val += (1LL<<bit);
        }
    }
    cout<<val<<'\n';
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
#ifdef home
    freopen("nr.in","r",stdin);
    freopen("nr.out","w",stdout);
#endif // home
    cin>>n>>a>>b;
    for(int i=1; i<=n; i++)
    {
        cin>>v[i];
        sp[i] = sp[i-1] + v[i];
    }
    if(a==1)
    {
        solve_1();
        return 0;
    }
    solve();
    return 0;
}

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