32 lines
527 B
Bash
Executable File
32 lines
527 B
Bash
Executable File
#!/bin/bash
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#
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# ex1.bash: Advent2020 game, day 14/game 1.
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CMD=${0##*/}
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shopt -s extglob
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declare -A mem
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declare -i pos
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declare ORMASK ANDMASK
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declare mask=""
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while read -r line; do
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line=${line// /}
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eval "$line"
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if [[ $line =~ ^mask ]]; then
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ORMASK=2\#${mask//X/0}
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ANDMASK=2\#${mask//X/1}
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else
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[[ $line =~ ^.*\[([0-9]+)\].* ]]
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pos=${BASH_REMATCH[1]}
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((mem[$pos] &= ANDMASK))
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((mem[$pos] |= ORMASK))
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fi
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done
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SUM=0
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for i in "${!mem[@]}"; do
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((SUM+=${mem[$i]}))
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done
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printf "%s : res=%d\n" "$CMD" "$SUM"
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exit 0
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