#include "bits/stdc++.h"
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define ll long long
#define pb push_back
#define in insert
#define F first
#define S second
#define vll vector<ll>
#define all(v) v.begin(),v.end()
#define endl '\n'
#define pii pair<ll,ll>
#define yes cout << "YES" << endl;
#define no cout << "NO" << endl;
using namespace std;
const ll INF = 1e18, mod = 1e9 + 7, N = 2e5 + 5;
ll gcd(ll a, ll b){
if(b == 0){
return a;
}
return gcd(b, a%b);
}
ll lcm(ll a, ll b){
return (a / gcd(a,b)) * b;
}
void solve(){
ll n,m;
cin >> n >> m;
ll a[n];
ll b[m + 1];
for(int i = 0; i < n; i++){
cin >> a[i];
}
bool test = false;
b[0] = 0;
for(int i = 1; i <= m; i++){
cin >> b[i];
}
ll c = 0;
vector<ll>pre(m + 1, 0);
pre[1] = b[1];
for(int i = 2; i <= m; i++){
pre[i] = pre[i - 1] + b[i];
}
for(int i = 1; i <= m; i++){
if(test){
break;
}
for(int j = i; j <= m; j++){
if(pre[j] - pre[i - 1] == a[0]){
test = true;
break;
}
}
}
if(test){
yes
}
else{
no
}
}
int main() {
fast;
ll t = 1;
// cin >> t;
while(t--){
solve();
}
return 0;
}
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