n = int(input())
total = 0
AB = []
for i in range(n):
    a, b = map(int, input().split())
    AB.append((a, b))
AB.sort(key=lambda x: x[0]+x[1])
cur = 0
for a, b in AB:
    if b < cur:
        print('No')
        exit()
    cur += a
print('Yes')