Compile Error
./Main.java:3: error: class Replacement is public, should be declared in a file named Replacement.java
public class Replacement {
^
1 error
[Hydro](https://hydro.ac)提供评测服务
./Main.java:3: error: class Replacement is public, should be declared in a file named Replacement.java
public class Replacement {
^
1 error
[Hydro](https://hydro.ac)提供评测服务
