#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
using namespace std;

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

    long long x = c / (a + b - 1);
    long long ans = x * a;
    c -= x * (a + b - 1);
    if(c < a)
        ans += c;
    else
        ans += a;
    cout << ans << endl;

    return 0;
}