SOFTBUG - Software Bugs

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Problem text

The biggest problem for all software developers are bugs. You definitely know the situationwhen a user calls to say "I've found a bug in your program". Once you have found and removedthe bug, another one appears immediately. It is a hard and never-ending process.Recently, there appeared a promising open-source initiative called "bug-preprocessor". The bug-preprocessor is a program able to find all bugs in your source code and mark them, so they arerelatively easy to be removed. Your task is to write a program that will remove all marked bugsfrom the preprocessed source code.

Input Specification

The input contains a text representing the preprocessed source code, an unspecified number oflines of text, some of them may be empty. Bugs are represented by a case-sensitive string "BUG".The text is terminated by the end of file. No line in the input will be longer than 100 characters.

Output Specification

Your program must remove all of the bugs from the input and print a text that does not containany BUG strings. Nothing else than bugs may be removed, not even spaces.

Example

Input:

print "No bugs here..."

void hello() {
BUGBUG
printfBUG("Hello, world!\n");
}

wriBUGBUGtelBUGn("Hello B-U-G");
    Output:

print "No bugs here..."

void hello() {

printf("Hello, world!\n");
}

writeln("Hello B-U-G");


Added by:Robert Rychcicki
Date:2008-11-07
Time limit:2s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ADA95 ASM32 BASH BF CLPS LISP sbcl LISP clisp D ERL FORTRAN HASK ICON ICK JS-RHINO LUA NEM NICE NODEJS OCAML PERL6 PHP PIKE PRLG-swi RUBY SCM qobi SCM guile ST VB.NET WHITESPACE
Resource:CEPC 2007