Equal Pairs

n = int(input())
max_diff = 0
number1 = int(input())
number2 = int(input())

previouse_sum = number1 + number2

for i in range(0,n-1):
    number1 = int(input())
    number2 = int(input())
    current_sum = number1 + number2

    if previouse_sum != current_sum:
        temp_diff = abs(previouse_sum-current_sum)
        if temp_diff > max_diff:
            max_diff = temp_diff
    previouse_sum = number1 + number2
if max_diff != 0:
    print(f"No, maxdiff={max_diff}")
else:
    print(f"Yes, value={previouse_sum}")