Through a little deduction, you should now be able to determine the remaining digits. Consider again the first example above:

acedgfb cdfbe gcdfa fbcad dab cefabd cdfgeb eafb cagedb ab | cdfeb fcadb cdfeb cdbaf

After some careful analysis, the mapping between signal wires and segments only make sense in the following configuration:

 dddd
e    a
e    a
 ffff
g    b
g    b
 cccc

So, the unique signal patterns would correspond to the following digits:

• acedgfb: 8
• cdfbe: 5
• gcdfa: 2
• fbcad: 3
• dab: 7
• cefabd: 9
• cdfgeb: 6
• eafb: 4
• cagedb: 0
• ab: 1

Then, the four digits of the output value can be decoded:

• cdfeb: 5
• fcadb: 3
• cdfeb: 5
• cdbaf: 3

Therefore, the output value for this entry is 5353.

Following this same process for each entry in the second, larger example above, the output value of each entry can be determined:

• fdgacbe cefdb cefbgd gcbe: 8394
• fcgedb cgb dgebacf gc: 9781
• cg cg fdcagb cbg: 1197
• efabcd cedba gadfec cb: 9361
• gecf egdcabf bgf bfgea: 4873
• gebdcfa ecba ca fadegcb: 8418
• cefg dcbef fcge gbcadfe: 4548
• ed bcgafe cdgba cbgef: 1625
• gbdfcae bgc cg cgb: 8717
• fgae cfgab fg bagce: 4315

Adding all of the output values in this larger example produces 61229.

Assignment

For each entry, determine all of the wire/segment connections and decode the four-digit output values. What do you get if you add up all of the output values? Determine this in the following way:

• Write a function search that takes the pathname (String) of a text file containing your observations of the submarine displays. Each line of the file contains the following tokens, separated by spaces: ten unique signal patterns, a vertical bar (|) and four digit output values. The function must return the sum (Int) of all output values.

Example

In this interactive session we assume the text files displays01.txt¹ and displays02.txt² to be located in the current directory.

> search("displays01.txt")
61229
> search("displays02.txt")
1070188