#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define pf push_front
#define F first
#define S second
#define IShowSpeed ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define all(a) a.begin(),a.end()
const int N=1e3+10;
const ll inf = 1e18 + 1337;
const int mod=1e9+7;
const int dx[] = {-1, 0, 0, 1};
const int dy[] = {0, -1, 1, 0};
ll a[N],b[N];
int main()
{
//freopen("bank.in","r",stdin);
//freopen("bank.out","w",stdout);
IShowSpeed
ll tt=1;
//cin>>tt;
while(tt--)
{
ll n,m;
cin>>n>>m;
for(int i=1;i<=n;i++) cin>>a[i];
for(int i=1;i<=m;i++) cin>>b[i];
for(int msk=0;msk < (1 << m);msk++) {
ll sum = 0;
for(int j=0;j<m;j++) {
if((msk >> j) & 1 == 1) {
sum += b[j+1];
}
}
if(sum == a[1]) {
cout<<"YES";
return 0;
}
}
cout<<"NO";
}
}
/*
1 2 2
2 3 1
*/
