49 lines
1.4 KiB
Nim
49 lines
1.4 KiB
Nim
# Copyright 2021 Christian Ulrich
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# usage: ./part1 < input
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import strutils
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const UniqueDigitSegments: array[4, int] = [
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2, # one
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4, # four
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3, # seven
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7, # eight
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]
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proc countUniqueOutputs(): int =
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var line = ""
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while readLine(stdin, line):
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let parts = line.split('|', 1)
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if parts.len() != 2:
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raise newException(ValueError, "invalid line")
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let outputs = parts[1].splitWhitespace()
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if outputs.len() != 4:
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raise newException(ValueError, "invalid output values")
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for output in outputs:
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if output.len() in UniqueDigitSegments:
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result.inc()
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proc main(): int =
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try:
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echo countUniqueOutputs()
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except Exception as error:
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echo error.msg
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result = -1
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when isMainModule:
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quit(main())
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