func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[200001];   int main() {     int n, w;     cin >> n >> w;     for (int i = 0; i < 2 * n; i++) {       cin >> a[i];     }     sort(a, a + 2 * n);     double x = min((double)a[0], (double)a[n] / 2);     double ans = min((double)w, (double)3 * n * x);     cout.precision(10);     cout << fixed;     cout << ans << endl;     return 0;   }   