% perl sprin
1.0 => 1  1.00 => 1.0  1.000 => 1.00
1.1 => 1  1.01 => 1.0  1.001 => 1.00
1.2 => 1  1.02 => 1.0  1.002 => 1.00
1.3 => 1  1.03 => 1.0  1.003 => 1.00
1.4 => 1  1.04 => 1.0  1.004 => 1.00
1.5 => 2  1.05 => 1.1  1.005 => 1.00
1.6 => 2  1.06 => 1.1  1.006 => 1.01
1.7 => 2  1.07 => 1.1  1.007 => 1.01
1.8 => 2  1.08 => 1.1  1.008 => 1.01
1.9 => 2  1.09 => 1.1  1.009 => 1.01