GODLINESS_

B - Prime Factors Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVA 583 Description   Prime Factors  Webster

So Easy! Problem Description 　　A sequence Sn is defined as: Where a, b, n, m are positive integers.┌x┐is the ceil of x. For example, ┌3.14┐=4. You are to calculate Sn. 　　You, a top coder,