Monistus

def to_string(l):
    new_string = ""
    for c in l:
        if(isinstance(c, list)):
            new_string += to_string(c)
        else:
            if(c.isalpha()):
                new_string += c
            
    return new_string

def get_new_string(string):
    
    string = list(string)
    
    for i in range(len(string)-1, -1, -1):
        if(string[i].isnumeric()):

            string = string[0:i+1] + [string[i+1:i+int(string[i])+1]]*2 + string[i+int(string[i])+1:]

    
    return string

syöte = input()

print(to_string(get_new_string(syöte)))

Test 1

Group: 1, 2

Verdict: WRONG ANSWER

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 27, in <module>
    p...

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