sigrid
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aoc
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aoc
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2021
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01-02.awk
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Sigrid Solveig Haflínudóttir
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4 years ago
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{m=NR%3;n-=a[m]-(a[m]=$1)}NR>=3{x+=o&&o<n;o=n}END{print x}
{m=NR%3;n-=a[m]-(a[m]=$1)}NR>=3{x+=o&&o<n;o=n}END{print x}
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