#include <bits/stdc++.h>
using namespace std;
using ll = long long; 
#ifdef LOCAL
#include <debug.h>
#else
#define dbg(...) 0
#define dbgn(...) 0
#endif

int32_t main() {
    cin.tie(0)->sync_with_stdio(0);
    int n; 
    cin >> n; 
    vector<int> v(n + 1); 
    for(int i = 0; i < n + 1; i++){
        cin >> v[i]; 
    }
    ll sum = 0; 
    for(int i = 2; i < n + 1; i++){
        sum += v[i]; 
    }
    if(sum <= v[1]) cout << "Yes\n"; 
    else cout << "No\n"; 
    return 0; 
}