#!/bin/nawk -f
# $Id: alignwidth,v 1.1 1992/09/06 18:36:35 schwartz Exp schwartz $

# s {
#   "human.seq" 38001 40000
#   "rabbit.seq" 14001 16000
# }

BEGIN {
  sblock=0
  width=0
}
/^s/ {
  sblock=1
  next
}
sblock==1 {
  print $3-$2+1
  exit
}