Submission #343318

#	Time	Username	Problem	Language	Result	Execution time	Memory
343318		Sprdalo	Gift (IZhO18_nicegift)	C++17	0 / 100	333 ms	22636 KiB

nicegift

#include <bits/stdc++.h>

using namespace std;

#define int ll
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<double> vd;
typedef vector<bool> vb;
typedef vector<char> vc;
typedef vector<string> vs;
typedef vector<pi> vp;
typedef vector<pl> vpl;

int f(int x, int n){
    if (x > n){
        x %= n;
    }
    return x;
}

signed main()
{
    ios_base::sync_with_stdio(false); 
    cin.tie(nullptr); 
    cout.tie(nullptr); 
    cerr.tie(nullptr);    

    int n, k;
    cin >> n >> k;

    vi a(n);
    for (auto& i : a){
        cin >> i;
    }

    if (a[0] %k && n%k) return cout << "-1\n", 0;
    if (n%k == 0){
        cout << n/k << '\n';
        for (int i = 1; i <= n; i += k){
            cout << a[0] << ' ';
            for (int j = i; j < i+k; ++j)
                cout << j << ' ';
            cout << '\n';
        }
        return 0;
    }

    int s = a[0]/k;
    cout << n << '\n';
    for (int i = 1; i <= n; ++i){
        cout << s << ' ';
        for (int j = i; j < i+k; ++j){
            cout << f(j, n) << ' ';
            a[f(j,n)-1] -=s;
        }
        cout << '\n';
    }

    for (int i = 0; i < n; ++i)
        if (a[i] > 0)
            throw SIGSEGV;
}

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