#include <iostream>
#include <stdio.h>
#include <algorithm>
#include <vector>
#include <cmath>
#include <string>
#include<sstream>
#include <queue>
#include <limits>
#include <cstdlib>
#include <deque>
#include <map>
#include <set>
using namespace std;

int main() {

	long long A=0;
	long long B =0;
	long long C=0;

	cin>>A>>B>>C;

	long long syo =0;
	long long amari =0;

	syo = C/(A-1+B);
	amari = C%(A-1+B);

	if(amari>A){
		cout<<A*syo+A<<endl;
	}else {
		cout<<A*syo+amari<<endl;
	}


	return 0;
}