count_pairs = int(input())
sum_of_nums = 0
sum_of_2 = 0
diff = 0

for i in range(count_pairs):
    sum_of_2 = sum_of_nums
    num1 = int(input())
    num2 = int(input())

    sum_of_nums = num1 + num2

    if i == 0:
        continue

    diff = abs(sum_of_2 - sum_of_nums)

if diff == 0:
    print(f"Yes, value={sum_of_nums}")
else:
    print(f"No, maxdiff={diff}")