#include <iostream>
#include <fstream>
#include <utility>
using namespace std;
ifstream fin("bank.in");
ofstream fout("bank.out");
int salary[25],notes[25],n,m;
pair<int,int> dp[1<<20];
// {completed salaries,currsum}
pair<int,int> calc(pair<int,int> pi,int note) {
int crtsalary = pi.first+1;
int crtsum = pi.second;
if (crtsum+note==salary[crtsalary]) {
return {pi.first+1,0};
} else if (crtsum+note<salary[crtsalary]) {
return {pi.first,pi.second+note};
} else {
// return {pi.first,pi.second+note};
return {-1,-1};
}
}
int main() {
cin>>n>>m;
for (int i = 1;i<=n;++i)
cin>>salary[i];
for (int i = 1;i<=m;++i)
cin>>notes[i];
for (int i = 0;i<(1<<m);++i) {
dp[i] = {-1,-1};
}
dp[0] = {0,0};
for (int mask = 1;mask<(1<<m);++mask) {
for (int j = 0;j<m;++j) {
if (mask&(1<<j)
// &&dp[mask-(1<<j)].first!=-1
) {
dp[mask] = max(calc(dp[mask-(1<<j)],notes[j+1]),dp[mask]);
}
}
if (dp[mask].first==n) {
cout<<"YES";
return 0;
}
}
cout<<"NO";
return 0;
}
