#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,s,d,f;
	cin>>a>>s>>d;
	f=a+s+d;
	if(f%2==0){
		if(a+s>=d){
			cout<<"Yes";
		}else{
			cout<<"No";
		}
	}else{
		cout<<"Bad";
	}
	}

/**************************************************************
	Problem: 1677
	User: tonghuawei
	Language: C
	Result: Compile Error
****************************************************************/