#include<stdio.h>
main()
{
	int a,b,c;
	int d=0;
	scanf("%d%d%d",&a,&b,&c);
	d=a+b+c;
	if(d%2==0)
	{
	    if(a+b>=c)
	     {
	        printf("Yes");
	     }
	      else
	     {
	        printf("No");
         }
    }
	else
	printf("Bad");	
}
/**************************************************************
	Problem: 1677
	User: admin
	Language: C
	Result: Accepted
	Time:23 ms
	Memory:1144 kb
****************************************************************/