Submission #878937

#	Time	Username	Problem	Language	Result	Execution time	Memory
878937		heeheeheehaaw	Bootfall (IZhO17_bootfall)	C++17	100 / 100	958 ms	2564 KiB

bootfall

#include <bits/stdc++.h>

using namespace std;

bitset<125005> dp;
int v[505], sepoate[250005];

int main()
{
    int n, sum = 0;
    cin>>n;
    dp[0] = 1;
    for(int i = 1; i <= n; i++)
    {
        cin>>v[i], sum += v[i];
        dp = ((dp << v[i]) | dp);
    }

    if(sum % 2 == 1 || dp[sum / 2] == 0)
    {
        cout<<0;
        return 0;
    }

    for(int i = 1; i <= n; i++)
    {
        dp.reset();
        sum -= v[i];
        dp[0] = 1;
        for(int j = 1; j <= n; j++)
        {
            if(j == i) continue;
            dp = ((dp << v[j]) | dp);
        }

        for(int j = 0; j <= sum && j * 2 <= sum; j++)
            if(dp[j] == 1)
                sepoate[sum - 2 * j]++;

        sum += v[i];
    }

    int rez = 0;
    vector<int> aux;
    for(int i = 0; i <= sum; i++)
        if(sepoate[i] == n)
            rez++, aux.push_back(i);
    cout<<rez<<'\n';
    for(auto it : aux) cout<<it<<" ";
    return 0;
}

• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 21 / 21
• Subtask 6: 35 / 35