#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;

int main() {
    int64_t a, b, c;
    cin >> a >> b >> c;

    int64_t x = a - 1 + b;
    int64_t y = c / x;
    int64_t z = c % x;

    cout << y * a + min(z, a) << endl;

    return 0;
}