import std.stdio, std.conv, std.string, std.range, std.typecons, std.format;
import std.algorithm.searching, std.algorithm.sorting, std.algorithm.iteration, std.algorithm.mutation;

void main()
{
    readln();
    int[] input = readln().split.to!(int[]);
    auto max = input.reduce!"a<b?b:a";
    auto sum = input.sum() - max;
    writeln(sum>max?"Yes":"No");

}
