def main
    arr = [1,-41,33,4,5,33,4,2,-41,10]
    n = arr.length
    start = -1
    lmax =  -1
    for i in 0..n-1
        start = i
        j = n - 1
        while j >= 0 and arr[i] != arr[j]
            j -= 1
        end
        if j - start > lmax
          lmax = j - start
          lstart = start
        end
    end
    print arr
    print"\nOutput:\n"
    print"Start position: ", lstart
    print "\nSubsequence is: "
    for i in lstart..lstart+lmax
      print arr[i]," "
    end
    print "\nLength: ", lmax, "\n"
end
 
main
 

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