Monistus

input1 = input()
discard = ""

done = False
while done == False:
    yes = True
    for char in input1:
        number = None
        string = ""
        if char.isdigit():
            yes = False
            number = int(char)
            input1 = input1.replace(char, "", 1)
            for x in range(number):
                string = string + input1[x]
            input1 = input1[:(number)] + string + input1[(number):]
            break
        else:
            input1 = input1.replace(char, "", 1)
            discard = discard + char
    if yes:
        done = True
print(discard)

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