#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define all(v) (v).begin() , (v).end()
#define nn "\n"
#define ex exit(0);
#define sz(s) (int)(s).size()
const int N = 2e5+5;
int cnt , ans , bit , n , t , k ,x , a , b , res , p,sum , r , l ;
char h;
vector<int> v;
int main(){
ios_base::sync_with_stdio(0) , cin.tie(0) , cout.tie(0);
map<int , int >mp;
cin>> n >> t ;
int m[n];
for(int i =0 ; i < n; i++){
cin>> m[i];
}
for(int i = 0 ; i < t ; i++){
cin>> x;
mp[x]++;
v.pb(x);
}
sort(all(v));
int p[t+1];
p[0] = 0 ;
for(int i = 0 ; i< t ; i++){
p[i+1]=p[i]+v[i];
}
for(int i= 1 ; i<= t ; i++){
if(p[i]==m[i]){
cout<<"YES";
ex;
}
if(p[i]>m[i]){
while(p[i]>m[i]){
p[i]-=p[l];
l++;
}
if(p[i]==m[i]){
cout<<"YES";
ex;
}
}
}
}
