保证最后的串不被删空![](//图.tk/j)
by 绝顶我为峰 @ 2022-01-25 20:02:34
感谢样例!
by AFewSuns @ 2022-03-09 21:23:26
针对一个常见错误的数据:
```cpp
idontwannaeatit
3
twanna
nea
ti
```
正确输出:
```cpp
idot
```
by Christophe_ @ 2022-05-29 16:31:26