number = int(input())

odd_sum = 0
even_sum = 0

for i in range(1, number + 1):
    current_num = int(input())

    if i % 2 == 0:
        even_sum += current_num
    else:
        odd_sum += current_num

if even_sum == odd_sum:
    print(f'Yes\nSum = {even_sum}')
else:
    diff = abs(even_sum -odd_sum)
    print(f'No\nDiff = {diff}')