func_code_string: #include <bits/stdc++.h>   using namespace std;   int main(int argc, char* argv[]) {     int n, m, k;     vector<double> r1, p1, p2;     cin >> n;     while (n--) {       int hlp;       cin >> hlp;       r1.push_back(hlp);     }     cin >> m;     while (m--) {       int hlp;       cin >> hlp;       p1.push_back(hlp);     }     cin >> k;     while (k--) {       int hlp;       cin >> hlp;       p2.push_back(hlp);     }     double A, B;     cin >> A >> B;     double maxr2 = 0;     sort(r1.begin(), r1.end());     sort(p1.begin(), p1.end());     sort(p2.begin(), p2.end());     {       maxr2 = r1[r1.size() - 1] * sqrt(p1[p1.size() - 1] / p2[0] /                                        (A / B + p1[p1.size() - 1] / p2[0]));     }     char buf[256];     cout << gcvt(maxr2, 50, buf);     return 0;   }   