#include<bits/stdc++.h>
using namespace std;
int main() {
    int a,b,c,n;
    cin>>a>>b>>c;
    n=a+b+c;
    if(a+b>=c&&n%2==0){
        cout<<"Yes"<<endl;
    }else if(n%2!=0){
        cout<<"Bad"<<endl;
    }else{
        cout<<"No"<<endl;
    }
}
/**************************************************************
	Problem: 1677
	User: wangyiyang
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/