Submission #735564

#	Time	Username	Problem	Language	Result	Execution time	Memory
735564		bin9638	Bali Sculptures (APIO15_sculpture)	C++17	0 / 100	152 ms	31952 KiB

sculpture

#include <bits/stdc++.h>

using namespace std;

#define N 2010
#define ll long long
#define fs first
#define sc second
#define ii pair<ll,int>
#define pb push_back
#define int ll

int n,A,B,a[N],ans,dp[N][N];

void solve(int id)
{
    int L=ans,R=ans+((1ll<<id)-1);
    memset(dp,0,sizeof(dp));
    for(int i=1;i<=n;i++)
    {
        if(a[i]>=L&&a[i]<=R)
            dp[i][1]=1;
        dp[i][1]+=dp[i-1][1];
    }
    for(int j=2;j<=B;j++)
    {
        int u=1,v=1;
        for(int i=j;i<=n;i++)
        {
            while(u<i&&a[i]-a[u]>R)
                u++;
            while(v<i&&a[i]-a[v+1]>=L)
                v++;
            if(u<=v&&a[i]-a[u]<=R&&a[i]-a[v]>=L)
                dp[i][j]=(dp[v][j-1]-dp[u-1][j-1]>0);
            dp[i][j]+=dp[i-1][j];
        }
    }
    for(int i=A;i<=B;i++)
        if(dp[n][i]>dp[n-1][i])
            return;
    ans+=(1ll<<id);
}

int32_t main()
{
    #ifdef SKY
    freopen("A.inp","r",stdin);
    freopen("A.out","w",stdout);
    #endif // SKY
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n>>A>>B;
    for(int i=1;i<=n;i++)
        cin>>a[i],a[i]+=a[i-1];
    for(int i=40;i>=0;i--)
        solve(i);
    cout<<ans;
    return 0;
}

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