Problem
A 【例4.1】交换两个数的位置
B 【例2.1】Hello World
C 练54.4 整数ABC
D 练13.3 反向输出一个三位数

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赛前测试

Status: Done
Rule: OI
Problem: 4
Start at: 2024-10-24 19:30
End at: 2024-10-24 21:00
Duration: 1.5 hour(s)
Host: 董博涛
Partic.: 22