08. Equal Pairs

n = int(input())
sums = 0
prev_sum = 0
diff = 0
max_diff = 0

for i in range(1, n+1):
    sums += int(input())
    sums += int(input())

    if i > 1:
        diff = abs(sums - prev_sum)

    if diff > max_diff:
        max_diff = diff
    prev_sum = sums
    sums = 0

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