#include <iostream>
#include <iomanip>
#include <cstring>
#include <algorithm> 
#include <math.h>
#include <queue>
#include <functional>
#include <map>
#include <vector>
#include <string>
using namespace std;
typedef long long ll;

int main(void){
    ll a, b, c;
    cin >> a >> b >> c;
    cout << a*(c / (a + b - 1)) + c % (a + b - 1) << endl;
}