#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int power(int x, int y, int mod) {
    int result = 1;
    x = x % mod;
    while(y > 0) {
        if(y %2 == 1) {
            result = result * x % mod;
        }
        y = y/2;
        x = (x * x) % mod;
    }
    return result;
}


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int aFactor, bFactor, milliseconds;
    
    cin >> aFactor >> bFactor >> milliseconds;
    
    int day1 = (aFactor + bFactor) / 2;
    long modulo = pow(10, 9) + 7;
    cout << power(day1, milliseconds, modulo) << endl;
        
    return 0;
}