#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: yangjunwen
	Language: C++
	Result: Accepted
	Time:22 ms
	Memory:2072 kb
****************************************************************/