Monistus

string = input()

nums = []
i = 0
while i < len(string):

    if(string[i].isnumeric()):

        digit = int(string[i])
        for n in range(i+1, i+digit+1):
            if(string[n].isnumeric()):
                nums.append(n-len(nums)-1)
                nums.append(n+digit-1)

        string = string[:i] + string[i+1:i+digit+1]*2 + string[i+digit+1:]

    if(nums != []):
        i = min(nums)
        nums.remove(i)
        continue
    i += 1

print(string)

Test 1

Group: 1, 2

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 10, in <module>
    i...

Test 2

Group: 1, 2

Verdict: ACCEPTED

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: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 10, in <module>
    i...

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