advent_of_code_2020_day1_part1

  #!/bin/bash
  
  inputs="$(<$1)"
  
  while read i
  do
    inputs="`echo "$inputs" | sed 1d`"
    while read x
    do
      sum=$(($x + $i))
      if [ $sum -eq 2020 ]
      then
        echo $(($x *$i))
      fi
    done <<< $inputs
  done <<< $inputs