#include<bits/stdc++.h>

#define ll long long
using namespace std;

int f, t, a, res;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin >> f >> t >> a;
    if (abs(f-t)<=a) {
        cout << "NO" << endl;
        return 0;
    }
    if (f + a < t) res = 2 * (f + a) + 1;
    if (t > f - a) res = 2 * (f - a) + 1;
    if (t < f - a) res = 2 * t + 1;
    cout << "YES" << endl;
    cout << res << endl;
    return 0;
}