# Enter your code here. Read input from STDIN. Print output to STDOUT
def p(x, y, d):
    if y == 0:
        return 1
    temp = p(x, y/2, d) % d
    if y%2 == 0:
        return temp*temp
    else:

        if y > 0:
            return x*temp*temp
        else:
            return (temp*temp)/x


a = map(int,raw_input().strip().split(' '))
x=(a[0]+a[1])/2
y=a[2]
d=10**9+7

print p(x,y,d)%d