import sys input = sys.stdin.readline a,b,c,d,e,N=map(int,input().split()) mod=10**9+7 # 行列の計算(numpyを使えないとき,modを使用) def prod(A,B,k,l,m):# A:k*l,B:l*m C=[[None for i in range(m)] for j in range(k)] for i in range(k): for j in range(m): ANS=0 for pl in range(l): ANS=(ANS+A[i][pl]*B[pl][j])%mod C[i][j]=ANS return C def plus(A,B,k,l):# a,B:k*l C=[[None for i in range(l)] for j in range(k)] for i in range(k): for j in range(l): C[i][j]=(A[i][j]+B[i][j])%mod return C A=[[c,1,0,1],[d,0,0,0],[e,0,1,0],[0,0,0,1]] POWA=[A] # 漸化式を行列累乗で求める(ダブリング) for i in range(60): POWA.append(prod(POWA[-1],POWA[-1],4,4,4)) # ベキを求めて X=[[b,a,1,a]] while N: X=prod(X,POWA[N.bit_length()-1],1,4,4) # n乗の場合 N-=1<<(N.bit_length()-1) print(X[0][3])