for _ in range(int(input())):
    L = list(map(int, input()))
    while len(L) > 1:
        L2 = []
        for i in range(len(L)-1):
            X = L[i] + L[i+1]
            L2 += [[X, X//10 + X%10][X > 9]]
        L = L2
    print(*L)