INPUT> put R1 10
Register 1: 00000000000000001010
Register 2: 00000000000000000000
Register 3: 00000000000000000000
Register 4: 00000000000000000000
INPUT> put R2 15
Register 1: 00000000000000001010
Register 2: 00000000000000001111
Register 3: 00000000000000000000
Register 4: 00000000000000000000
INPUT> add R3 R1 R2
Register 1: 00000000000000001010
Register 2: 00000000000000001111
Register 3: 00000000000000001111
Register 4: 00000000000000000000