## https://yukicoder.me/problems/no/3228

MOD = 1000000007

def prod(left, right):
    new_matrix = [[0 for _ in range(6)]  for _ in range(6)]
    for i in range(6):
        for j in range(6):
            for k in range(6):
                new_matrix[i][j] += (left[i][k] * right[k][j]) % MOD
                new_matrix[i][j] %= MOD
    return new_matrix


def main():
    a, b, c, d, e, N = map(int, input().split())
    if N == 0:
        print(a % MOD)
        return
    
    base_matrix = [
        [0, 1, 0, 1, 0, 0],
        [d, c, e, 0, 1, 0],
        [0, 0, 1, 0, 0, 1],
        [0, 0, 0, 1, 0, 0],
        [0, 0, 0, 0, 1, 0],
        [0, 0, 0, 0, 0, 1],
    ]
    matrix = [[0] * 6 for _ in range(6)]
    for i in range(6):
        matrix[i][i] = 1
    
    n = N - 1
    while n > 0:
        if n % 2 == 1:
            matrix = prod(base_matrix, matrix)
        
        base_matrix = prod(base_matrix, base_matrix)
        n //= 2

    vector = [a, b, 1, a, b, 1]
    new_vector = [0] * 6
    for i in range(6):
        for j in range(6):
            new_vector[i] += (matrix[i][j] * vector[j]) % MOD
            new_vector[i] %= MOD
    
    answer = new_vector[1]
    answer += a
    answer %= MOD
    print(answer)



if __name__ == "__main__":
    main()