using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
class Solution {

    static long countArray(long n, long k, long x) {
        // Return the number of ways to fill in the array.
        if(x%2==0)
            return k;
        else
            return n*k;
            
    }

    static void Main(String[] args) {
        string[] tokens_n = Console.ReadLine().Split(' ');
        long n = Convert.ToInt32(tokens_n[0]);
        long k = Convert.ToInt32(tokens_n[1]);
        long x = Convert.ToInt32(tokens_n[2]);
        long answer = countArray(n, k, x);
        Console.WriteLine(answer);
    }
}