import sys
from decimal import *

a,b,t = [int(k) for k in input().strip().split()]
num = 0.5 * (a+b)
## p = ((0.5*(a+b))**t) % (10**9 + 7)
mod = 10**9 + 7
## print(mod)
p = getcontext().power(Decimal(num), Decimal(t), Decimal(mod))
print(p)