equal_pairs

count_pair = int(input())
check_count = 2 * count_pair
pair = 0
a = 0
list_pair = []
while check_count:
    num = int(input())
    pair = pair + num
    a = a + 1
    if a == 2:
        list_pair.append(pair)
        pair = 0
        a = 0

    check_count -= 1

equ = True
first_num = list_pair[0]
for number in list_pair:
    if number != first_num:
        equ = False
        break

max_diff = 0
for x in range(len(list_pair)):
    for y in range(x + 1, len(list_pair)):
        if (abs(list_pair[x] - list_pair[y])) > max_diff:
            max_diff = abs(list_pair[x] - list_pair[y])

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