#include <bits/stdc++.h>

using namespace std;
int main()
{
    long long int a,b,c;
    cin>>a>>b>>c;

    if(c%2==0)
    {
        if(abs(a)==abs(b))
        cout<<"=";
        else if(abs(a)>abs(b))
        cout<<">";
        else
        cout<<"<";
    }
    else
    {
        if(a>b)
        cout<<">";
        else if(a<b)
        cout<<"<";
        else
        cout<<"=";
    }
       

    
}
#include <bits/stdc++.h>


#define int long long


#define f first
#define s second
#define rep(i,a,b)for(int i=a;i<b;i++)
#define pb push_back

const int mod = 1e9 + 7;
const int INF = 1e18;
const int SIZE = 1e6 * 5 + 5;
using namespace std;




void solve() {

    int a[3];
    cin >> a[0];
    cin >> a[1];
    cin >> a[2];

    sort(a, a + 3);

    int diff1 = a[1] - a[0];
    int diff2 = a[2] - a[1];

    if (diff2 == diff1) {
        cout << "Yes\n";
    }
    else {
        cout << "No\n";
    }


}

signed main()
{
    ios::sync_with_stdio(0);

    cin.tie(0);
    cout.tie(0);


    int T = 1;

    // cin >> T;
    // sieve();

    // op();

    while (T--)
    {

        solve();


    }

    return 0;
}