Problem:
Score : 100 points

Problem Statement

An elementary school student Takahashi has come to a variety store.

He has two coins, A-yen and B-yen coins (yen is the currency of Japan), and wants to buy a toy that costs C yen. Can he buy it?

Note that he lives in Takahashi Kingdom, and may have coins that do not exist in Japan.

Constraints

All input values are integers.

1 \leq A, B \leq 500

1 \leq C \leq 1000

Input

Input is given from Standard Input in the following format:

A B C

Output

If Takahashi can buy the toy, print Yes; if he cannot, print No.

Sample Input 1

50 100 120

Sample Output 1

Yes

He has 50 + 100 = 150 yen, so he can buy the 120-yen toy.

Sample Input 2

500 100 1000

Sample Output 2

No

He has 500 + 100 = 600 yen, but he cannot buy the 1000-yen toy.

Sample Input 3

19 123 143

Sample Output 3

No

There are 19-yen and 123-yen coins in Takahashi Kingdom, which are rather hard to use.

Sample Input 4

19 123 142

Sample Output 4

Yes

Solution in Python (3.4.3) (judge verdict: Runtime Error)

from operator import itemgetter

n = int(input())
r = []
b = []
c = 0
for i in range(n):
  r.append(list(map(int,input().split())))
for i in range(n):
  b.append(list(map(int,input().split())))
r.sort(key = itemgetter(1),reverse = True)
b.sort(key = itemgetter(0))
for i in range(n):
  for j in range(n):
    if b[i][0] > r[j][0] and b[i][1] > r[j][1]:
      r[j] = [10**6,10**6]
      c += 1
      break
print(c)