#include <iostream>
using namespace std;
int main() {
int n, s=0;
cin>>n;
int a[n];
for(int i=0; i<n; i++){
cin>>a[i];
s+=a[i];
}
if(s%2!=0){
cout<<"NO"<<endl;
return 0;
}
int m=s/2;
int dp[m+1]={0,};
dp[0]=1;
for(int i=0; i<n; i++)
for(int j=m-a[i]; j>=0; j--)
if(dp[j]==1) dp[j+a[i]]=1;
if(dp[m]==1) cout<<"YES";
else cout<<"NO";
return 0;
}
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