#include <bits/stdc++.h>
#define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
using namespace std;
const int N = 20;
const int M = 1 << N;
int a[N], b[N];
int s[N];
int cnt[M];
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
int n, m;
cin >> n >> m;
for(int i = 0; i < n; ++i) {
cin >> a[i];
s[i] += a[i];
s[i + 1] += s[i];
}
for(int i = 0; i < m; ++i) cin >> b[i];
for(int i = 0; i < (1 << m); ++i) {
int x = i;
int sum = 0;
for(int j = 0; j < m; ++j) if(x >> j & 1) sum += b[j];
int tp = -1;
for(int j = 0; j < n; ++j) if(s[j] == sum) tp = j;
if(tp == 0) cnt[i] = 1;
else if(tp == -1) for(int j = 0; j < m; ++j) if(x >> j & 1) cnt[i] = max(cnt[i], cnt[i - (1 << j)]);
else for(int j = 0; j < m; ++j) if((x >> j & 1) && cnt[i - (1 << j)] == tp) cnt[i] = tp + 1;
if(cnt[i] == n) return cout << "YES\n", 0;
}
cout << "NO\n";
return 0;
}
