Submission #62620

#	Time	Username	Problem	Language	Result	Execution time	Memory
62620		Vahan	Split the sequence (APIO14_sequence)	C++17	50 / 100	2048 ms	16964 KiB

sequence

#include<iostream>
using namespace std;
long long d[100007][201],n,k,a[200000],ss;
int main()
{
    cin>>n>>k;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        ss+=a[i];
    }
    long long s=0;
    for(int i=1;i<=n;i++)
    {
        s+=a[i];
        for(int j=0;j<=min(i-1,200);j++)
        {
            if(j==0)
            {
                d[i][j]=s*s;
                continue;
            }
            long long e=0;
            for(int z=i;z>=j+1;z--)
            {
                e+=a[z];
                if(d[i][j]==0)
                    d[i][j]=e*e+d[z-1][j-1];
                d[i][j]=min(d[i][j],e*e+d[z-1][j-1]);
                if(e>2*s/(j+1))
                    break;
            }

        }
    }
    cout<<(ss*ss-d[n][k])/2<<endl;
    int l=n,r=k;
    s=0;
    for(int i=n;i>=2;i--)
    {
        s+=a[i];
        if(s*s+d[i-1][r-1]==d[l][r])
        {
            cout<<i-1<<" ";
            s=0;
            r--;
            if(r==0)
                break;
            l=i-1;
        }
    }
    return 0;
}
/*
7 3
4 1 3 4 0 2 3*/

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 17 / 17
• Subtask 5: 0 / 21
• Subtask 6: 0 / 29