s = input()

i = 0
while i < len(s):
    j = i

    while s[j].isalpha():
        j += 1

    k = j

    while s[k].isdigit():
        if k < len(s) - 1:
            k += 1

    mm = int(s[j : k])
    for c in range(mm):
        print(s[i], end = '')

    i = k