摘要：Factorial of an integer is defined by the following function f(0) = 1 f(n) = f(n - 1) * n, if(n > 0) So, factorial of 5 is 120. But in different bases 阅读全文

摘要：Given an integer N, you have to prime factorize N! (factorial N). Input Input starts with an integer T (≤ 125), denoting the number of test cases. Eac 阅读全文

摘要：You task is to find minimal natural number N, so that N! contains exactly Q zeroes on the trail in decimal notation. As you know N! = 1*2*...*N. For e 阅读全文

摘要：Find the number of trailing zeroes for the following function: nCr * pq where n, r, p, q are given. For example, if n = 10, r = 4, p = 1, q = 1, then 阅读全文

摘要：In a strange planet there are n races. They are completely different as well as their food habits. Each race has a food-eating period. That means the 阅读全文