Submission #829240

#	Time	Username	Problem	Language	Result	Execution time	Memory
829240		Hanksburger	Cookies (JOI23_cookies)	C++17	7 / 100	66 ms	1152 KiB

cookies

#include <bits/stdc++.h>
using namespace std;
vector<pair<int, int> > vec;
vector<vector<int> > ans;
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, m, k, sum=0;
    cin >> n;
    for (int i=0; i<n; i++)
    {
        int x;
        cin >> x;
        vec.push_back({x, i+1});
    }
    cin >> m >> k;
    for (int i=0; i<n; i++)
        sum+=vec[i].first;
    if (sum%k)
    {
        cout << -1;
        return 0;
    }
    for (int i=0; i<sum/k; i++)
    {
        sort(vec.begin(), vec.end(), greater<pair<int, int> >());
        vector<int> tmp;
        for (int j=0; j<k; j++)
        {
            if (!vec[j].first)
            {
                cout << -1;
                return 0;
            }
            vec[j].first--;
            tmp.push_back(vec[j].second);
        }
        ans.push_back(tmp);
    }
    cout << ans.size() << '\n';
    for (int i=0; i<ans.size(); i++)
    {
        cout << ans[i].size() << ' ';
        for (int j=0; j<ans[i].size(); j++)
            cout << ans[i][j] << ' ';
        cout << '\n';
    }
}

Compilation message (stderr)

cookies.cpp: In function 'int main()':
cookies.cpp:43:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for (int i=0; i<ans.size(); i++)
      |                   ~^~~~~~~~~~~
cookies.cpp:46:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for (int j=0; j<ans[i].size(); j++)
      |                       ~^~~~~~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 7 / 7
• Subtask 3: 0 / 12
• Subtask 4: 0 / 45
• Subtask 5: 0 / 15
• Subtask 6: 0 / 15