#PF-Assgn-15
def find_product(num1,num2,num3):
    product=0
    if(num1==7):
        product = num2*num3
    elif(num2==7):
        product = num3
    
    elif(num3==7):
         product = -1
   
    else:
        product = num1*num2*num3    
    
    return product

#Provide different values for num1, num2, num3 and test your program
product=find_product(7,6,2)
print(product)