fuck off E2 80 AA

local str, magic = io.read(), "\x00"
if string.find(str, magic) then
    error("File contains magic bytes")
end
local result = str:gsub("\xe2\x80\xaa", magic):gsub(magic.."+", function(s)
    return string.char(97 + ((#s-1) % 25))
end)
print("\n"..result)