def tekaTekiTeko(batas):
    if not isinstance(batas, int) or batas < 20:
        raise ValueError("Parameter harus bertipe unsigned integer dan minimal 20")
 
    for i in range(1, batas + 1):
        output = ""
        if i % 2 == 0:
            output += "Teka"
        if i % 3 == 0:
            output += "Teki"
        if i % 5 == 0:
            output += "Teko"
 
        print(output if output else i)
 
try:
    tekaTekiTeko(30)
except Exception as e:
    print("Error:", e)
 

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