func_code_string: #include <bits/stdc++.h>   using namespace std;   long double area(long double a, long double b, long double c) {     long double s = (a + b + c) / 2.0;     return sqrt(s * (s - a) * (s - b) * (s - c));   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int i, j;     long double l[9], a = 0;     for (i = 0; i < 6; i++) cin >> l[i];     for (i = 0, j = 6; i < 6; i += 2, j++) {       l[j] =           sqrt(((l[i]) * (l[i])) + ((l[i + 1]) * (l[i + 1])) + l[i] * l[i + 1]);       a += area(l[i], l[i + 1], l[j]);     }     a += area(l[6], l[7], l[8]);     int temp = (4.0 * a) / (long double)sqrt(3);     cout << temp <<   n ;     return 0;   }   