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Re:不过也不一定，好像用树状数组的方法来不断找低位1有搞头，你看看呢，我也还没过，:P

Posted by cangratul at 2007-04-28 21:57:47 on Problem 2984
In Reply To:不过也不一定，好像用树状数组的方法来不断找低位1有搞头，你看看呢，我也还没过，:P Posted by:frogxx at 2007-04-28 21:41:11 
我是先高精度除法转2进后，求1的个数，然后在高精度乘法求2^k-1，自己又没数据，只是试了几个长的，好象中间没有溢出的样子``哎~~
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