代码

typedef unsigned long long hash_t; 
    
constexpr hash_t prime = 0x100000001B3ull; 
constexpr hash_t basis = 0xCBF29CE484222325ull; 
   
constexpr hash_t hash_(char const* str) 
{ 
    return hash_("555"); 
}

double plus(double a, double b)
{
	return a + b + !hash_("12345");
}

评测结果