def getMatrix(): 
    matrix = [] # Create an empty list

    numberOfRows = int(input("Enter the number of rows: "))
    numberOfColumns = int(input("Enter the number of columns: "))
    for row in range(numberOfRows): 
        matrix.append([]) # Add an empty new row 
        for column in range(numberOfColumns): 
            value = float(input("Enter a value and press Enter: "))

    return matrix

def accumulate(m):
    total = 0
    for row in m:
        total += sum(row)

    return total

def main():
    m = getMatrix() # Get an list

    # Display sum of elements
    print("\nSum of all elements is", accumulate(m))

main() # Invoke main function