$ perl t.pl
Range: 0
Range: 10
Range: 10
Range: 25
Range: 56
Range: 144
In range A
Range: 208
In range A
In range B
Range: 254
In range A
In range B
Range: 323
In range A
In range B
In range C
Range: 379
In range B
In range C
Range: 468
In range B
Range: 530
Range: 550
Range: 557