//Bismillahir-Rahmanir-Rahim
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ll long long
#define ld long double
#define dbg(x) cerr << #x << " = " << x << "\n";
#define ff first
#define ss second
/*
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma comment (linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
*/
const long long INF = 1e9 + 7;
const long long MOD = 1e9 + 7;
const int maxn = 1e5 + 20;
// const int lg = 20;
int n, m, a[maxn], b[maxn];
pair <int, int> dp[(1 << 20)];
void press_F_() {
cin >> n >> m;
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
for (int j = 1; j <= m; j++) {
cin >> b[j];
}
dp[0] = {1, 0};
for (int mask = 0; mask < (1 << m); mask++) {
for (int j = 0; j < m; j++) {
if (((mask >> j) & 1) == 0 && dp[mask].ff <= n && dp[mask].ss + b[j + 1] <= a[dp[mask].ff]) {
int newmask = mask + (1 << j);
int newid = dp[mask].ff;
int sum = dp[mask].ss + b[j + 1];
if (dp[mask].ss + b[j + 1] == a[newid]) {
newid++;
sum = 0;
}
if (dp[newmask].ff <= newid) {
dp[newmask] = {newid, sum};
}
}
}
}
for (int mask = 0; mask < (1 << m); mask++) {
if (dp[mask].ff > n) {
cout << "YES";
return;
}
}
cout << "NO";
}
int main() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int T = 1;
// cin >> T;
for (int _ = 1; _ <= T; ++_) {
// cout << "Case " << i << ": ";
press_F_();
}
//Respa gold 2025 InshAllah
// return 0;
}
/*
Maybe not today and tomorrow, but InshAllah one day I will reach cm
*/
// g++ -std=c++17 main.cpp
// ./a.out
