You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
arr = [[1, 2, 3], 
[4, 5, 6], 
[7, 8, 9]] 

# Initialize result 
result = 0

# Iterate every element in the array 
for row in arr: 
  for col in row:
    # Adding elements of each row 
    result = result + col  

# Displaying sum 
print(result)


user
45
assistant