#include<bits/stdc++.h>
#define ll int
#define f first
#define s second
#define pb push_back
using namespace std;
ll n,m,a[205],b[205];
ll sum[3000005],ind[3000005],dp[3000005];
int main(){
ios::sync_with_stdio(false);
cin >> n >> m;
for(int i=1; i<=n; i++){
cin >> a[i];
a[i] += a[i - 1];
}
a[n + 1] = a[n];
for(int i=1; i<=m; i++){
cin >> b[i];
}
sum[0] = 0;
for(int i=1; i<=m; i++)
for(int j=0; j<(1 << m); j++)
if((j & (1 << (i - 1))) == 0)
sum[j | (1 << (i - 1))] = sum[j] + b[i];
dp[0] = 1;
for(int j=0; j<(1 << m); j++){
ll lst = 0;
for(int i=1; i<=n; i++)
if(a[i] <= sum[j])
lst = i;
ind[j] = lst;
}
for(int j=1; j<(1 << m); j++)
for(int i=1; i<=m; i++)
if(j & (1 << (i - 1)))
if(sum[j] <= a[ind[j - (1 << (i - 1))] + 1] && dp[j - (1 << (i - 1))])
dp[j] = 1;
for(int i=0; i<(1 << m); i++)
if(ind[i] == n && dp[i]){
cout << "YES";
return 0;
}
cout << "NO";
return 0;
}
