numbers_count=int(input())

odd_sum=0
even_sum=0

for index in range(numbers_count):
	number=int(input())
	if index%2!=0:
		even_sum+=number
    else:
		odd_sum+=number
if even_sum==odd_sum:
	print('Yes')
    print(f'Sum = {odd_sum}')
else:
	print('No')
    print(f'Diff = {abs(even_sum-odd_sum)}')