#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ul = unsigned long;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    ll a, b, c;
    cin >> a >> b >> c;

    cout << c / (a - 1 + b) * a + min(a, c % (a + b - 1)) << "\n";

    return 0;
}