Submission #1016258

#	Time	Username	Problem	Language	Result	Execution time	Memory
1016258		AndrijaM	Kpart (eJOI21_kpart)	C++17	10 / 100	2037 ms	1028 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#define int long long

const int mod = 1e9 + 7;
const int maxn = 1e5 + 10;
const int logn=25;

/* LazySeg tree
int n;
int st[4*maxn];///min
int lz[4*maxn];


void u(int L,int R,int i,int j,int nval,int pos)
{
    if(lz[pos]!=0)
    {
        st[pos]+=lz[pos];
        if(L!=R)
        {
            lz[2*pos]+=lz[pos];
            lz[2*pos+1]+=lz[pos];
        }
        lz[pos]=0;
    }
    if(i<=L && R<=j)
    {
        st[pos]+=nval;
        if(L!=R)
        {
            lz[2*pos]+=nval;
            lz[2*pos+1]+=nval;
        }
        return ;
    }
    if(R<i || L>j)
    {
        return;
    }
    int mid=(L+R)/2;
    u(L,mid,i,j,nval,2*pos);
    u(mid+1,R,i,j,nval,2*pos+1);
    st[pos]=min(st[2*pos],st[2*pos+1]);
}

int query(int L,int R,int i,int j,int pos)
{
    if(lz[pos]!=0)
    {
        st[pos]+=lz[pos];
        if(L!=R)
        {
            lz[2*pos]+=lz[pos];
            lz[2*pos+1]+=lz[pos];
        }
        lz[pos]=0;
    }
    if(i<=L && R<=j)
    {
        return st[pos];
    }
    if(R<i || L>j)
    {
        return 1e15;
    }
    int mid=(L+R)/2;
    return min(query(L,mid,i,j,2*pos),query(mid+1,R,i,j,2*pos+1));
}*/

signed main()
{
    ///freopen("sirbun.in","r",stdin);
    ///freopen("sirbun.out","w",stdout);
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t;
    cin>>t;
    int n;
    while(t--)
    {
        cin>>n;
        int x[n+1];
        int p[n+1];
        p[0]=0;
        for(int i=1;i<=n;i++)
        {
            cin>>x[i];
            p[i]=p[i-1]+x[i];
        }
        vector<int>ans;
        for(int k=2;k<=n;k++)
        {
            bool ok=true;
            for(int i=1;i<=n-k+1;i++)
            {
                int kol=(p[k+i-1]-p[i-1]);
                if(kol%2==1)
                {
                    ok=false;
                    break;
                }
                kol/=2;
                set<int>prev;
                prev.insert(0);
                set<int>next;
                for(int j=i;j<=i+k-1;j++)
                {
                    for(auto ax:prev)
                    {
                        next.insert(ax+x[j]);
                    }
                    prev=next;
                }
                if(prev.count(kol)==0)
                {
                    ok=false;
                    break;
                }
            }
            if(ok)
            {
                ans.push_back(k);
            }
        }
        cout<<ans.size()<<" ";
        for(auto ax:ans)
        {
            cout<<ax<< " ";
        }
        cout<<endl;
    }
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 70