题目描述
Each of Farmer John’s N N N barns has selected a team of C C C cows to participate in field day. The breed of every cow is either a Guernsey or a Holstein.
The difference between two teams is defined to be the number of positions i i i ( 1 ≤…
建表
mysql> create table work(-> ‘部门号’ int(11) not null,-> ‘职工号’ int(11) not null,-> ‘工作时间’ date not null,-> ‘工资’ float(8,2) not null,-> ‘政治面貌’ varchar(10) not null default 群众,-> ‘姓名’ varchar(20) not nu…