Submission #891204

#	Time	Username	Problem	Language	Result	Execution time	Memory
891204		sleepntsheep	Kpart (eJOI21_kpart)	C++17	100 / 100	1058 ms	928 KiB

Main

#include <iostream>
#include <bitset>
#include <fstream>
#include <iomanip>
#include <cmath>
#include <cassert>
#include <cstring>
#include <numeric>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>
#include <complex>

using namespace std;
#define ALL(x) begin(x), end(x)
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);

void docase()
{
    int n;
    cin >> n;
    vector<int> a(n), dp(50005, -1);
    bitset<1001> c;
    for (auto &x : a) cin >> x;

    for (int sum = 0, i = 0; i < n; ++i)
    {
        sum += a[i];
        for (int j = 50000; j >= a[i]; --j)
        {
            if (j - a[i] >= 0 && dp[j - a[i]] != -1) dp[j] = max(dp[j], dp[j - a[i]]);
            else if (j - a[i] == 0) dp[j] = i + 1;
        }
        for (int sub = sum, j = 0; j <= i; ++j)
        {
            if (!(sub & 1) && dp[sub / 2] >= j + 1);
            else
                c[i-j+1] = 1;
            sub -= a[j];
        }
    }

    cout << n - c.count() << ' ';
    for (auto i = 1; i <= n; ++i)
        if (!c[i]) cout << i << ' ';


    cout << '\n';
}

int main()
{
    ShinLena;
    int T;
    cin >> T;
    while (T--) docase();
    return 0;
}

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