MOD = pow(10,9)+7
L = [[(1,0),(0,1)]]
for i in range(7):
    aa = L[-1][0][0] - L[-1][1][0]
    ab = L[-1][0][1] - L[-1][1][1]
    ba = L[-1][0][0] + L[-1][1][0]
    bb = L[-1][0][1] + L[-1][1][1]
    L.append([(aa,ab),(ba,bb)])
#print(L)
A,B,C,D = map(int,input().split())
N = int(input())
idx = (N+1)%8 #b_N+1 = a_N + b_N
if L[idx][1][0] >= 0:
    p = B
else:
    p = A
if L[idx][1][1] >= 0:
    q = D
else:
    q = C
#print(p,q)
ans = pow(16,(N+1)//8,MOD) * (p*L[idx][1][0] +q*L[idx][1][1])
print(ans%MOD)