```cin``` -> ```scanf```
```cout``` -> ```printf```
by jwcub @ 2018-09-16 11:38:00
@[5743377_2002](/space/show?uid=36701)
```endl``` -> ```'\n'```
by jwcub @ 2018-09-16 11:39:02
why,
by 正式AFO @ 2018-09-16 11:40:42
能少几毫秒？
by 正式AFO @ 2018-09-16 11:41:10
```cpp
scanf, printf 比 cin, cout 大约能快七八倍。。
大数据读入还是别用cin, cout了吧
```
by djh123 @ 2018-09-20 21:45:39
@[5743377_2002](/space/show?uid=36701)
by djh123 @ 2018-09-20 21:45:52
谢谢。那就能A了
by 正式AFO @ 2018-09-20 21:50:05