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| #!/usr/bin/env bash | |
| set -eu | |
| echo '--- Day 1: Trebuchet?! ---' | |
| echo -n 'Part 1: ' | |
| # Combine first and last instance of digit as a two-digit number and find | |
| # sum. Sample input: | |
| # | |
| # 1abc2 -> 12 |