#include <bits/stdc++.h>

using namespace std;

void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

int main() {
    fast_io();
    int a, b, c;
    cin >> a >> b >> c;
    vector<int> cand{c + b};
    if (c <= b) {
        cand.push_back(c);
    }
    vector<int> ans;
    for (int x : cand) {
        if (x % a == 0) {
            ans.push_back(x / a);
        }
    }
    sort(ans.begin(), ans.end());
    if (ans.empty()) {
        cout << -1 << "\n";
    } else {
        for (int x : ans) {
            cout << x << "\n";
        }
    }
}