# include <iostream>
# include <vector>
# define fi first
# define se second
using namespace std;
int a[30], b[30];
int s[30000];
int n, m;
vector < pair < int, int > > vc[30000];
int main()
{
cin >> n >> m;
for (int i = 1; i <= n; i++){
cin >> a[i];
a[i] += a[i - 1];
}
for (int i = 0; i < m; i++){
cin >> b[i];
}
for (int i = 1; i <= a[n]; i++){
s[i] = s[i - 1];
if(i == a[s[i] + 1])
s[i]++;
}
vc[0].push_back({0, 0});
for (int i = 0; i < a[n]; i++){
for (size_t j = 0; j < vc[i].size(); j++){
int mask = vc[i][j].fi;
int cnt = vc[i][j].se;
for (int k = 0; k < m; k++){
if( mask & (1 << k) ) continue;
int mask1 = mask | (1 << k);
if(s[i + b[k]] == cnt)
vc[i + b[k]].push_back({mask1, cnt});
else if(a[s[i + b[k]]] == i + b[k] && s[i + b[k]] == cnt + 1)
vc[i + b[k]].push_back({mask1, cnt + 1});
}
}
}
if(vc[a[n]].empty() == false)
cout << "YES";
else
cout << "NO";
}
/*
1 5
8
4 2 5 1 3
2 6
9 10
5 4 8 6 3 11
*/
