换成iostream又AC了
这难道是### bug吗？
by abonda @ 2018-06-20 21:49:41
`long long`应用`%lld`读入，而`cin`和`cout`会自动根据变量类型读入
by Siyuan @ 2018-06-20 22:03:24
@[siyuan](/space/show?uid=49725) ooo，谢了
by abonda @ 2018-06-23 23:04:52