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

int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */
    const double prob{0.5};
    int growthRateOne{0};
    cin >> growthRateOne;

    int growthRateTwo{0};
    cin >> growthRateTwo;

    unsigned long long int growthTime{0};
    cin >> growthTime;

    int base{int(prob*(growthRateOne + growthRateTwo))};

    vector<int> binaryTime;
    while(growthTime != 0){
        binaryTime.push_back(growthTime%2);
        growthTime = growthTime >> 1;
    }

    long long int module{1000000007};
    long long int cells{1};
    const int length = binaryTime.size();
    for(int bit = length-1; bit >= 0; bit--){
        cells = cells*cells%module;
        if(binaryTime[bit] == 1)
            cells = cells*base%module;
    }
    cout << cells;
    return 0;
}