#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#define var 1000000007
#define inv 500000004 
#define ull unsigned long long int
ull modular(ull a,ull b)
{ull result=1;
    while(b!=0)
    {
        if(b%2!=0)
        {result=(result*a)%var;}
        b=b/2;
        a=(a*a)%var;
            
    }
return result; 
    
}    
int main() {

    ull a,b,t,i,sum=0;
    scanf("%llu%llu%llu",&a,&b,&t);
    sum=((modular(a+b,t)%var)*(modular(inv,t)%var))%var;
    
    
    printf("%llu",sum);
    return 0;
}