import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) {
        Read in = new Read();
        int x = in.nextInt(), y = in.nextInt(), z = in.nextInt();
        int i = 1;
        for (; i < Integer.MAX_VALUE; i++) {
            if ((double) i / z >= (double) y / x)
                break;
        }
        System.out.println(i - 1);
    }

    static class Read {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer("");

        String next() {
            while (!st.hasMoreTokens()) try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        int[] readArray(int n) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++) a[i] = nextInt();
            return a;
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }
    }
}