import java.util.*;

public class Main {
	static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		long a = sc.nextLong();
		long b = sc.nextLong();
		long c = sc.nextLong();

		long n = a-1+b; //a年間でn円
		if (n >= c) {System.out.println(1);}
		else {
			long x = c/n;
			long y = c%n;
			System.out.println(x*a+y);
		}
	} 
}