#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 << "Bad";
    }
    else
    {
        cout << "No";
    }
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int c , v ,b;
    cin >> c >> v >> b;
    int n = c + v + b;
    if (n % 2 == 1)
    {
        cout << "Bad";
    } 
    else
    {
        if(c + v >= b)
        {
            cout << "Yes";
        }
        else
        {
            cout <<"No";
        }
    }
    return 0;
}//A

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