Software Bugs - Задачі

\includegraphics{https://static.e-olymp.com/content/df/dfbfc96807179394df9f53e140fb6fa02070eac0.jpg} Not all bugs are insects. There are also certain kinds of bugs that may become a real nightmare for software developers. You definitely know the situation when a user calls to say “Hey, I’ve found a bug in your program.” Once you have located and removed the bug, another one appears immediately. It is a hard and never-ending process. Recently, there appeared a promising open-source initiative called the Bug Preprocessor. The preprocessor is a program able to find all bugs in your source code and mark them, so they are relatively easy to remove. Your task is to write a program that will remove all marked bugs from the preprocessed source code. \InputFile The input contains several test cases. Each test case starts with a line containing one integer number \textbf{T} (\textbf{0} ≤ \textbf{T} ≤ \textbf{100000}), one space and a string \textbf{B} used by the preprocessor to mark all bugs. The next \textbf{T} lines then contain the preprocessed source code. All bugs are represented by a case-sensitive string \textbf{B}. Each line of the input will be between \textbf{0} and \textbf{2000000} characters long. The bug marker \textbf{B} consists of at least \textbf{1} and at most \textbf{1000} uppercase letters ("\textbf{A}" through "\textbf{Z}"). \OutputFile Your program must remove all of the bugs and produce the same result as if the first occurrence of \textbf{B} on each line was removed repeatedly, until there is no other existing occurrence of \textbf{B}. Nothing else may be removed, not even spaces.

Ліміт часу 1 секунда

Ліміт використання пам'яті 64 MiB

Вхідні дані #1

7 BUG
print "No bugs here..."

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

1 ERR
wriERRERRtelERRn("Hello E-R-R");

Вихідні дані #1

print "No bugs here..."

void hello() {

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

writeln("Hello E-R-R");