number = int(input())
odd_sum = 0
even_sum = 0

for position in range(1 , number +1):
    new_number = int(input())
    if  position % 2 == 0:
        even_sum += new_number
    else:
        odd_sum += new_number

if odd_sum == even_sum:
    print(f"Yes")
    print(f"Sum = {odd_sum}")
else:
    print(f"No")
    print(f"Diff = {abs(odd_sum- even_sum)}")