#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define MOD 1000000007
 
long long int power (long long int a, long long int b) {
    long long int ans=1ll;
    while(b) {
        if(b&1)ans=(ans*a)%MOD;
        a=(a*a)%MOD;
        b=b/2;
    }
    return ans;
}

int main(void)
{
   int aGF = 0;
   int bGF = 0;
   long long int tMS = 0;
   long long int vCount = 1;
   scanf("%d%d%lld",&aGF,&bGF,&tMS);
    
   vCount = 0.5*aGF*1+0.5*bGF*1;
  // printf("%lld\n",vCount);
   long long int virus = power(vCount, tMS);
  // printf("%lld\n",virus);
    //  double vCount = (0.5 * aGF) + (0.5 * bGF) * tMS * (tMS+1)/2;
  // int virusT = virus % 100000007;
   
   printf("%lld\n",virus);
   return 0;
   
    
}