document.write('
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  1. #!/bin/bash
  2.  
  3. declare -i flag
  4. declare -i temp=0
  5.  
  6. for i in $(cat text|sed \'s/\\(.\\{1\\}\\)/\\1 /g\')
  7. do  
  8.     if [ "$i" == "x" ]
  9.     then  
  10.         i=0  
  11.     elif [ "$i" == "y" ]
  12.     then
  13.         flag=2
  14.     else
  15.         if [ "$flag" == "0" ]
  16.         then
  17.                 temp=temp+i
  18.         else      
  19.             flag=$flag-1      
  20.         fi
  21.     fi
  22. done
  23. echo $temp
');