Monistus

mrkjono = input()
length = len(mrkjono)

i = 0
while i<length:
# if number found
    if mrkjono[i].isdigit():
        mslice = mrkjono[(i + 1):(i + 1 + int(mrkjono[i]))]
        mrkjono = mrkjono.replace(mrkjono[i], mslice, 1)
        found_digit = False
        for j in range(len(mslice)):
            if mslice[j].isdigit():
                found_digit = True
                i += j
                length = len(mrkjono)
                break
        if not found_digit:
            i += 2*len(mslice)+1
    else:
        i += 1
print(mrkjono)

Test 1

Group: 1, 2

Verdict: WRONG ANSWER

Test 2

Group: 1, 2

Verdict: WRONG ANSWER

Test 3

Group: 1, 2

Verdict: WRONG ANSWER

Test 4

Group: 1, 2

Verdict: WRONG ANSWER

Test 5

Group: 1, 2

Verdict: WRONG ANSWER

Test 6

Group: 1, 2

Verdict: WRONG ANSWER

Test 7

Group: 1, 2

Verdict: WRONG ANSWER

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