Problem:
Score : 200 points

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.

Constraints

All values in input are integers.

3 \leq N \leq 10

1 \leq L_i \leq 100

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.

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

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>

int main(void){
    int n;
    int i,sum;
    int maxl = 0;
    scanf("%d",&n);
    int a[n];        //何故かa[n]にしたら上手くいかない
    for(i=0;i<n;i++){
        scanf("%d",&a[i]);
    }
    for (i=0;i<n;i++){
        if (a[i]>maxl){
            maxl = a[i];
        }
    }
    for (i=0;i<n;i++){
        sum += a[i];
    }
    // printf("%d\n",sum);
    if (maxl<sum-maxl){
        printf("Yes\n");
    }else{
        printf("No\n");
    }
    return 0;
}