08. Equal Pairs

num = int(input())
value = int(input()) + int(input())
max_diff = 0

for i in range(num - 1):
    current = int(input()) + int(input())
    diff = abs(value - current)
    if diff > max_diff:
        max_diff = diff
    else:
        value = current

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