func_code_string: #include <bits/stdc++.h>   using namespace std;   int n;   long long int w, x[200005];   int main() {     cin >> n >> w;     for (int i = 0; i < n * 2; i++) cin >> x[i];     sort(x, x + n * 2);     double mid;     mid = min((double)x[n] / 2, (double)x[0]);     mid = (mid + mid * 2) * n;     mid = min(mid, (double)w);     printf( %.6f n , mid);   }   