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

/* Function to calculate x raised to the power y */
/*int power(int x, unsigned int y)
{
    if( y == 0)
        return 1;
    else if (y%2 == 0)
        return power(x, y/2)*power(x, y/2);
    else
        return x*power(x, y/2)*power(x, y/2);
 
}
*/
unsigned long long mypower(unsigned long long x, unsigned long long y){
    if (y == 0) return 1; 
    unsigned long long temp = mypower(x, y/2);
    if (y%2 == 0) return (temp%1000000007*temp%1000000007); 
    else return (x*temp%1000000007*temp%1000000007);
}
long virus1 = 1.0, virus2= 1.0, dev=1.0e9+7.0;

int main() {
    unsigned long long a,b,t,k;
    cin >> a >> b >> t;
    k=((a*0.5)+(b*0.5));
    //int answ=mypower(k,t);
    cout << mypower(k,t);
    return 0;
}