04. Equal Pairs

# 04. Equal Pairs

n = int(input())
current_sum = 0
previous_sum = 0

max_difference = 0


for i in range(n):
    num1 = int(input())
    num2 = int(input())

    if i == 0:
        previous_sum = num1 + num2
    else:
        current_sum = num1 + num2
        difference = abs(previous_sum - current_sum)
        if max_difference < difference:
            max_difference = difference
        previous_sum = current_sum
if max_difference == 0:
    print(f"Yes, value={previous_sum}")
else:
    print(f"No, maxdiff={max_difference}")