Submission #844071

#	Time	Username	Problem	Language	Result	Execution time	Memory
844071		GrandTiger1729	Gift (IZhO18_nicegift)	C++17	19 / 100	225 ms	49644 KiB

nicegift

#include <bits/stdc++.h>
using namespace std;

int main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n, K; cin >> n >> K;
    vector<long long> a(n);
    for (int i = 0; i < n; i++)
        cin >> a[i];
    if (a[0] * n % K != 0)
    {
        cout << -1 << '\n';
        return 0;
    }
    vector<vector<int>> ans;
    for (int i = 0; !(i != 0 && i % n == 0); i += K)
    {
        ans.emplace_back();
        for (int j = i; j < i + K; j++)
            ans.back().emplace_back(j % n);
    }
    cout << ans.size() << '\n';
    for (auto &vec : ans)
    {
        cout << a[0] * n / K / ans.size() << ' ';
        for (int j = 0; j < K; j++)
            cout << vec[j] + 1 << " \n"[j == K - 1];
    }
    return 0;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 12
• Subtask 4: 19 / 19
• Subtask 5: 0 / 51