#include<bits/stdc++.h>
using namespace std;
using ll = long long;
ll a,b,c;
void solve(){
    while(cin>>a>>b>>c){
        bool flag = false;
        if(a+b==c){
            flag = true;
        }
        else if(abs(a-b)==c){
            flag = true;
        }
        else if(a*b ==c){
            flag = true;
        }
        else if((a/b==c&&!(a%b))||(b/a==c&&!(b%a))){
            flag = true;
        }
        if(flag){
            cout<<"YES";
        }else{
            cout<<"NO";
        }
        cout<<"\n";
    }

}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);  
    solve();
    return 0;
}