data segment
    value db 10h, 20h, 30h, 40h, 50h
data ends

code segment
    assume cs:code, ds:data
begin:
    mov ax, data
    mov ds, ax
    lea si, value
    mov cx, 05h
    mov bl, 30h
counter:
    mov al, [si]
    mov ah, 0000h
    cmp al, bl
    jg add_10
    jng add_20
    
add_10:
    mov ax, 10h
    add [si], ax
    inc si
    dec cx
    jnz counter
    jmp exit

add_20:
    mov ax, 20h
    add [si], ax
    inc si
    dec cx
    jnz counter
    jmp exit

exit:
    mov ax, 4c00h
    int 21h

code ends
end begin