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  1. import std.stdio, std.string, std.algorithm;
  2.  
  3. void main()
  4. {
  5. stdin
  6. .byLine
  7. .map!(a => a.replace("a", "b"))
  8. .each!writeln;
  9. }
  10.  
Success #stdin #stdout 0s 16472KB
stdin
qwerty
aaaaa
bbbbb
aaabb
bbabb
stdout
qwerty
bbbbb
bbbbb
bbbbb
bbbbb