多表查询 create table student (
id int not null unique primary key,
name varchar(20) not null,
sex varchar(4),
birth year,
department varchar(20),
address varchar(50)
);create table score (
id int not null unique primary key auto_increment,
stu_id int not …
[ABC261E] Many Operations - 洛谷 | 计算机科学教育新生态 (luogu.com.cn)
Problem Statement
We have a variable X and N kinds of operations that change the value of X. Operation i is represented as a pair of integers (Ti,Ai), and is the following operati…