Submission #1265077

#	Time	Username	Problem	Language	Result	Execution time	Memory
1265077		tvgk	Let's Win the Election (JOI22_ho_t3)	C++20	10 / 100	4 ms	328 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define task "a"
#define se second
#define fi first
#define ll long long
#define ii pair<ll, ll>
const long mxN = 2e5 + 7, inf = 1e9 + 7;

int n, k;
ii a[mxN];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen(task".INP", "r", stdin);
    //freopen(task".OUT", "w", stdout);

    cin >> n >> k;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i].se >> a[i].fi;
        if (a[i].fi == -1)
            a[i].fi = inf;
    }
    sort(a + 1, a + n + 1);

    double sum = 0, ans = inf;
    for (int i = 0; i <= k; i++)
    {
        if (a[i].fi == inf)
            break;

        if (i)
            sum += double(a[i].fi) / i;

        vector<double> vc;
        for (int j = i + 1; j <= n; j++)
            vc.push_back(a[j].se);
        sort(vc.begin(), vc.end());

        double tmp = 0;
        for (int j = 0; j < k - i; j++)
            tmp += vc[j] / (i + 1);
        ans = min(ans, sum + tmp);
    }
    cout << fixed << setprecision(9) << ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12
• Subtask 5: 0 / 33
• Subtask 6: 0 / 11
• Subtask 7: 0 / 23