func_code_string: #include <bits/stdc++.h>   int main() {     long long l3, l4, l5;     std::cin >> l3 >> l4 >> l5;     long double pi = 3.141592653589793238462643383279;     long double v3 = 1.0 / 3.0 * l3 * l3 * sqrtl(3.0) / 4.0 * l3 * sqrtl(2.0 / 3);     long double v4 = 1.0 / 3.0 * l4 * l4 * l4 * sqrtl(2) / 2;     long double v5 = 1.0 / 3.0 * l5 * l5 * sqrtl(25 + 10 * sqrtl(5)) / 4 * l5 *                      sqrtl(4 * sinl(pi / 5) * sinl(pi / 5) - 1) /                      (2 * sinl(pi / 5));     std::cout.precision(10);     return std::cout << std::fixed << v3 + v4 + v5, 0;   }   