Submission #987273

#	Time	Username	Problem	Language	Result	Execution time	Memory
987273		normankr07	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	348 KiB

molecules

#define taskname ""
#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#ifndef LOCAL
#define cerr \
    if (0)   \
    cerr
#endif

const bool multitest = 0;

int n, l, u;
vector<int> w;

std::vector<int> find_subset(int l, int u, std::vector<int> w)
{
    // for (int i = 1; i <= n; i++)
    // {
    //     if (l <= w[i - 1] && w[i - 1] <= u)
    //     {
    //         return vector<int>(i);
    //     }
    // }
    vector<pair<int, int>> ww;
    ll sum = 0;
    for (int i = 0; i < n; i++)
    {
        sum += w[i];
        ww.push_back(make_pair(w[i], i));
    }
    sort(ww.begin(), ww.end());
    vector<int> id;
    for (int i = n - 1, j = n; i < j && i >= -1;)
    {
        while (sum > u && i >= 0)
        {
            sum -= ww[i].first;
            i--;
        }
        if (l <= sum && sum <= u)
        {
            for (int p = 0; p <= i; p++)
                id.push_back(ww[p].second);
            for (int p = j; p < n; p++)
                id.push_back(ww[p].second);
            return id;
        }
        j--;
        sum += ww[j].first;
    }
    return vector<int>();
}

void solve()
{
    cin >> n >> l >> u;
    w.assign(n, 0);
    for (auto &v : w)
        cin >> v;
    auto ans = find_subset(l, u, w);
    cout << ans.size() << '\n';
    for (auto v : ans)
    {
        cout << v << ' ';
    }
}
/*
int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if (fopen(taskname ".inp", "r"))
    {
        freopen(taskname ".inp", "r", stdin);
        freopen(taskname ".out", "w", stdout);
    }
    int tc = 1;
    if (multitest)
        cin >> tc;
    while (tc--)
    {
        solve();
        cout << '\n';
    }
}
*/

• Subtask 1: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31