原创 單表查詢習題總結

/*********建數據庫和表***********************/ CREATE DATABASE TSGL --創建圖書管理數據庫TSGL CREATE TABLE bookinfo --在該庫中創建圖書信息表 (

原创 A - LCM from 1 to n ----Light 1289

Given an integer n, you have to find lcm(1, 2, 3, ..., n) lcm means least common multiple. For example lcm(2, 5, 4) =

原创 Codeforce #511(Div 2) C. Enlarge GCD

Mr. F has n positive integers, a1,a2,…,an. He thinks the greatest common divisor of these integers is too small. So he