Monistus

str_input = input()
# 82silisko mis3si1pi


#first_digits = [int(char) for char in str_input if char.isdigit()]
first_digit_index = next((index for index, char in enumerate(str_input) if char.isdigit()), None)



while first_digit_index is not None:
    first_digit = int(str_input[first_digit_index])

    slice_start = first_digit_index + 1
    slice_end = slice_start + first_digit
    substring = str_input[slice_start:slice_end]
    str_input = str_input.replace(str(first_digit), substring, 1)

    first_digit_index = next((index for index, char in enumerate(str_input) if char.isdigit()), None)

print(str_input)

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: ACCEPTED

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 1, 2

Verdict: ACCEPTED

Test 7

Group: 1, 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 11

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 2

Verdict: TIME LIMIT EXCEEDED