#include<bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
int main(){
int n,m;
cin >> n >> m;
vector<int> a(n), r(m);
for(int i = 0; i < n; i++){
cin >> a[i];
}
for(int j = 0; j < m; j++){
cin >> r[j];
}
map<long long, int> fr;
fr[0] = 1;
bool is = false;
int s = 0;
int ans = 0;
int o = 0;
for(int j = 0; j < m; j++){
s += r[j];
if(s > a[0]){
s -= r[o++];
}
else if(s == a[0]){
is = 1;
}
}
if(is){
cout << "YES";
}
else{
cout << "NO";
}
}
