Code Breaker: Challenge #1 _

Difficulty Level: 1 Padlock

Your score: 0 pts

Check the following pseudo-code to work out the passcode needed to complete this level:
BEGIN
passcode = "1"
passcode = passcode + "2"
passcode = passcode + "3"
passcode = passcode + "4"
OUTPUT passcode
END
Enter your passcode:
ERROR
SUCCESS
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