/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String pattern = "</{0,1}\\s*(((\\w+\\s*)={0,1}(\"|'){0,1}((\\w+\\s*-*_*)*(:|;|\\)|\\()*/{0,2}(\\w*\\s*/{0,1}\\.{0,1}&*;*\\?*=*-*\\+*%*)(\"|'){0,1}))\\s*)*/{0,1}>";
		String str = "<script>alert(123)</script>";
		System.out.println(str.replaceAll(pattern, ""));
	}
}

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