#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;
}