func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     double x, r1 = 0, p1 = 0, p2 = 999999999999, a, b;     cin >> n;     while (n--) {       cin >> x;       r1 = max(r1, x);     }     cin >> n;     while (n--) {       cin >> x;       p1 = max(p1, x);     }     cin >> n;     while (n--) {       cin >> x;       p2 = min(p2, x);     }     cin >> a >> b;     x = b * p1;     double up = x * r1 * r1, down = a * p2 + x;     cout << setprecision(10) << sqrt(up / down);   }   