# Enter your code here. Read input from STDIN. Print output to STDOUT
# Enter your code here. Read input from STDIN. Print output to STDOUT
import math
p=int(math.pow(10,9)+7)
def power(x,y,p):
    res = 1;     
    x = x % p;           
    while (y > 0):
        if (y %2 == 1):
            res = (res*x) % p
        y= y/2
        x = (x*x) % p
    return res
        
c=raw_input().split()
for i in range(0,3):
    a=int(c[0])
    b=int(c[1])
    t=int(c[2])
ans=power((a+b)/2,t,p)

print int(ans)