#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
	if(a+b>=c){
		cout<<"Yes";
	}else if(a+b+c%2==1){
		cout<<"bed";
	}
}

/**************************************************************
	Problem: 1677
	User: toughuatao1
	Language: C++
	Result: Wrong Answer
****************************************************************/