P23860 [AtCoder] Polygon
入门
题目描述

Problem Statement

Determine if an N-sided polygon (not necessarily convex) with sides of length L_1, L_2, ..., L_N can be drawn in a two-dimensional plane.
You can use the following theorem:
Theorem: an N-sided polygon satisfying the condition can be drawn if and only if the longest side is strictly shorter than the sum of the lengths of the other N-1 sides.

Input

Input is given from Standard Input in the following format:
N
L_1 L_2 ... L_N

Output

If an N-sided polygon satisfying the condition can be drawn, print Yes; otherwise, print No.

Constraints

  • All values in input are integers.
  • $3 \leq N \leq 10$
  • $1 \leq L_i \leq 100$

Sample Input 1

4
3 8 5 1

Sample Output 1

Yes

Since 8 < 9 = 3 + 5 + 1, it follows from the theorem that such a polygon can be drawn on a plane.

Sample Input 2

4
3 8 4 1

Sample Output 2

No

Since $8 \geq 8 = 3 + 4 + 1$, it follows from the theorem that such a polygon cannot be drawn on a plane.

Sample Input 3

10
1 8 10 5 8 12 34 100 11 3

Sample Output 3

No

输入格式

见题面 Input 部分

输出格式

见题面 Output 部分

样例输入
4 3 8 5 1
样例输出
Yes