#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
    ll a,b,c;
    cin>>a>>b>>c;
    vector<ll> ans;
    vector<ll> can;
    if(c<=b) can.push_back(c);
    can.push_back(c+b);
    for(auto n:can){
        if(n%a==0) ans.push_back(n/a);
    }
    sort(ans.begin(),ans.end());
    if(ans.size()==0) cout<<-1<<endl;
    else {
        for(int i = 0;i<ans.size();i++){
            cout<<ans[i]<<endl;
        }
    }
}