func_code_string: #include <bits/stdc++.h>   using namespace std;   using longInt = long long;   const int maxL = 204;   int r[maxL], g[maxL], b[maxL], l[3];   longInt f[maxL][maxL][maxL];   void get_array(int *a, int n) {     for (int i = 1; i <= n; ++i) cin >> a[i];     sort(a + 1, a + n + 1, [](int x, int y) -> bool { return x > y; });   }   int main() {     ios::sync_with_stdio(false);     longInt ans = 0;     cin >> l[0] >> l[1] >> l[2];     get_array(r, l[0]);     get_array(g, l[1]);     get_array(b, l[2]);     for (int i = 0; i <= l[0]; ++i)       for (int j = 0; j <= l[1]; ++j)         for (int k = 0; k <= l[2]; ++k) {           f[i][j][k] = 0;           if (i > 0 && j > 0)             f[i][j][k] = max(f[i][j][k], f[i - 1][j - 1][k] + r[i] * g[j]);           if (j > 0 && k > 0)             f[i][j][k] = max(f[i][j][k], f[i][j - 1][k - 1] + g[j] * b[k]);           if (k > 0 && i > 0)             f[i][j][k] = max(f[i][j][k], f[i - 1][j][k - 1] + b[k] * r[i]);           ans = max(ans, f[i][j][k]);         }     cout << ans << endl;     return 0;   }   