using System;
using System.Collections.Generic;
using System.IO;
using System.Numerics;
class Solution {
        static ulong power(ulong x, ulong y)
        {
            ulong res = 1;  
            while (y > 0)
            {
                // If y is odd, multiply x with result
                if (y % 2 != 0)
                    res = res * x % 1000000007;
                y = y>>1; // y = y/2
                x = x * x % 1000000007;  // Change x to x^2
            }
            return res;
        }
    static void Main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution */
            ulong[] temp = Array.ConvertAll(Console.ReadLine().Split(' '),ulong.Parse);
            ulong semiResult = ((temp[0] + temp[1]) / 2);
            ulong finalResult = power(semiResult, temp[2]);
            Console.WriteLine(finalResult);
    }
}