#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,z;
	cin>>a>>b>>c;
	z=a+b+c;
	if(z%2==0&&a+b>=c)cout<<"Yes"<<endl;
	else if(z%2!=0)cout<<"Bad"<<endl;
	else cout<<"No"<<endl;
	return 0;
}

/**************************************************************
	Problem: 1677
	User: admin
	Language: C++
	Result: Accepted
	Time:25 ms
	Memory:2072 kb
****************************************************************/