rt，样例疑似在 Windows 下生成，请管理员修复

数据：

16
A B C
a b c d e
B came!
B came!
B came!
B  left!
a started playing games!
a stopped playing games!
B left!
A came!
b started playing games!
A left!
c started playing games!
d started playing games!
e started playing games!
B came!
PS:zhe_ge_yang_li_hen_zheng_chang!
B left!

（仅输入）