摘要：
Description . . . and so on . . . Unfortunately, Boudreaux's computer is very unreliable and crashes often. He could easily tell if a crash occurred b 阅读全文
摘要：
题目描述 给出正整数n和k，计算G(n, k)=k mod 1 + k mod 2 + k mod 3 + … + k mod n的值，其中k mod i表示k除以i的余数。例如G(10, 5)=5 mod 1 + 5 mod 2 + 5 mod 3 + 5 mod 4 + 5 mod 5 …… + 阅读全文