| .. | ||
| .gitignore | ||
| main.c | ||
| README.md | ||
| rucksack_items.txt | ||
Day 3
🎁🎁🎁
Today's language: C
All the characters (the Elf's items) occuring in (half) a line (backpack) are stored as bits in an unsigned long, duplicate characters can then be determined by bitwise and-ing these numbers.
# Find the item type that appears in both compartments of each rucksack. What is the sum of the priorities of those item types?
gcc main.c -o day3
./day3