// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #include <bits/stdc++.h>
#include<iostream>
#include<cstring>
using namespace std;
#define ll long long
const ll mod = 1e9 + 7;
ll n, m, a[20], b[20], dp1[(1 << 20)], dp2[(1 << 20)];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin >> n >> m;
for (int i = 0; i < n; i++)cin >> a[i];
for (int i = 0; i < m; i++)cin >> b[i];
memset(dp1, -1, sizeof(dp1));
memset(dp2, -1, sizeof(dp2));
dp1[0] = dp2[0] = 0;
for (int mask = 0; mask < (1 << m); mask++) {
for (int i = 0; i < m; i++) {
if (mask & (1 << i)) {
int prev = mask & ~(1 << i);
int nwamnt = dp2[prev] + b[i];
int cur_target = a[dp1[prev]];
if (cur_target > nwamnt) {
dp1[mask] = dp1[mask];
dp2[mask] = nwamnt;
}
if (cur_target == nwamnt) {
dp1[mask] = dp1[mask] + 1;
dp2[mask] = 0;
}
}
}
if (dp1[mask] == n) {
cout << "YES\n";
return 0;
}
}
cout << "NO\n";
}
