$0 = 1 $4 = 0 while $0 <= H * W $1 = $0 / W $2 = $0 % W $3 = ((A[$1, $2]-B[$1, $2]) * (A[$1, $2]-B[$1, $2]) + 9999) / 10000 $4 = $4 + $3 * $0 $0 = $0 + 1 $5 = $4 / W $6 = $4 % W return($4, $6)