//#include <bits/stdc++.h>
//#define MAXN 21
//using namespace std;
//
//int a[MAXN], b[MAXN];
//bool possible[MAXN][1 << MAXN];
//vector<int> combos[MAXN * 1000];
//int N, M;
//
//int main() {
// ios_base::sync_with_stdio(0);
// cin.tie(NULL);
// cin >> N >> M;
// for(int i = 0; i < N; i++) cin >> a[i];
// for(int i = 0; i < M; i++) cin >> b[i];
//
// for(int mask = 0; mask < (1 << M); mask++) {
// int sum = 0;
// for(int i = 0; i < M; i++) {
// if(mask & (1 << i)) sum += b[i];
// }
// combos[sum].push_back(mask);
// }
//
// possible[0][0] = true;
// for(int i = 0; i < N; i++) {
// for(int mask = 1; mask < (1 << M); mask++) {
// for(int combo : combos[a[i]]) {
// if((combo & mask) == combo) possible[i+1][mask] |= possible[i][mask - combo];
// }
// }
// }
//
// bool res = false;
// for(int i = 0; i < (1 << M); i++) res |= possible[N][i];
// if(res) cout << "YES\n";
// else cout << "NO\n";
//}
#include <iostream>
#include <vector>
using std::cout;
using std::endl;
using std::vector;
int main() {
int people_num;
int note_num;
std::cin >> people_num >> note_num;
vector<int> people(people_num);
vector<int> banknotes(note_num);
for (int& p : people) {
std::cin >> p;
}
for (int& b : banknotes) {
std::cin >> b;
}
vector<int> leftover(1 << note_num, -1);
vector<int> people_covered(1 << note_num, -1);
leftover[0] = 0;
people_covered[0] = 0;
for (int s = 0; s < (1 << note_num); s++) {
for (int last = 0; last < note_num; last++) {
if ((s & (1 << last)) == 0) {
continue;
}
int prev = s & ~(1 << last);
if (people_covered[prev] == -1) {
continue;
}
int new_amt = leftover[prev] + banknotes[last];
// the salary of the current person we're going to try to pay
int curr_target = people[people_covered[prev]];
// if it's still not enough, just increment the leftover pile
if (new_amt < curr_target) {
people_covered[s] = people_covered[prev];
leftover[s] = new_amt;
}
/*
* or it's exactly right, in which case reset the leftover count
* and increment the covered amount
*/
else if (new_amt == curr_target) {
people_covered[s] = people_covered[prev] + 1;
leftover[s] = 0;
}
}
// we've covered all the people!
if (people_covered[s] == people_num) {
cout << "YES" << endl;
return 0;
}
}
cout << "NO" << endl;
}
