Untitled

n = int(input())
odd_sum, even_sum = 0, 0
for num in range(n):
    value = int(input())
    if num % 2 == 0: even_sum += value
    else: odd_sum += value
if odd_sum == even_sum:
    print('Yes')
    print(f'Sum = {odd_sum}')
else:
    print('No')
    print(f'Diff = {abs(odd_sum - even_sum)}')