B"Consider a system of n water taps all pouring water into the same container. The i-th water tap can be set to deliver any amount of water from 0 to ai ml per second (this amount may be a real number). The water delivered by i-th tap has temperature ti. If for every you set i-th tap to deliver exactly xi ml of water per second, then the resulting temperature of water will be (if , then to avoid division by zero we state that the resulting water temperature is 0). You have to set all the water taps in such a way that the resulting temperature is exactly T. What is the maximum amount of water you may get per second if its temperature has to be T? The first line contains two integers n and T (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89200000, 1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89T xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89106) -- the number of water taps and the desired temperature of water, respectively. The second line contains n integers a1, a2, ..., an (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89ai xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89106) where ai is the maximum amount of water i-th tap can deliver per second. The third line contains n integers t1, t2, ..., tn (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89ti xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89106) -- the temperature of water each tap delivers. Print the maximum possible amount of water with temperature exactly T you can get per second (if it is impossible to obtain water with such temperature, then the answer is considered to be 0). Your answer is considered correct if its absolute or relative error doesn't exceed 10 xe2 x80 x89- xe2 x80 x896. "...