# coding: utf-8

def fact(n):
    r = 1
    while n > 1:
        r *= n
        n -= 1
    return r

def ncr(n, r):
    return fact(n) // fact(r) // fact(n - r)


def solve(s):
    i_list = list(map(int, s))
    n = len(i_list)
    r = 0
    for i in range(n):
        r += ncr(n-1, i) * i_list[i]
    while r >= 10:
        r = sum(map(int, str(r)))
    return r

T = int(input())
for i in range(T):
    print(solve(input().strip()))