Submission #453895

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Source Code Expand

read a;
if [ $a -eq 1 ];then
  awk '{print $0}'
else
  tail -$a|sort -n|awk -F- '{
    m=int(substr($1,4,1))
    if (m!=0) {
      if (m < 5) {
        $1=$1-m
      } else if (m > 5) {
        $1=$1-m+5
      }
    }
    m=int(substr($2,4,1))
    if (m!=0) {
      if (m < 5) {
        $2=$2-m+5
      } else if (m > 5) {
        n=int(substr($2,3,2))
        if (n >= 50) {
          $2=$2-m-50+100
        } else {
          $2=$2-m+10
        }
      }
    }

    print $1"-"$2
  }'|uniq | awk -F- '{
    if (right !=null) {
      if (right>=$1) {
        if ($2>right) {
          right=$2
        }
      } else {
        print left"-"right
        left=$1
        right=$2
      }
    } else {
      left=$1
      right=$2
    }
  }; END {print left"-"right}'|uniq
fi

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