Equal Pairs 2.0

n = int(input())
pairs = []
sum_num = ""
for i in range(n):
    for u in range(1):
        num1 = int(input())
        num2 = int(input())
        sum_num = num1 + num2
    pairs.append(sum_num)
    sum_num = 0
max_diff = []
if n > 1:
    maxdiff = pairs[0] - pairs[1]
    max_diff.append(maxdiff)
elif n == 1:
    maxdiff = pairs[0]

for i in range(0, len(pairs) - 1):
    diff = abs(pairs[i] - pairs[i + 1])
    max_diff.append(diff)

if min(pairs) == max(pairs):
    print(f"Yes, value={pairs[0]}")
else:
    print(f"No, maxdiff={max(max_diff)}")