Monistus

mj = input('')
vastaus = mj
sisalla = []
entinen = []
erotus = 0
eka = ''

for key, merkki in enumerate(mj):
    if merkki.isdigit():
        miinus = 0
        for i in range(len(sisalla)):
            if sisalla[i-miinus]-key <= 0:
                sisalla.pop(i-miinus)
                miinus += 1
        #print(len(sisalla))
        if len(sisalla) == 0:
            vastaus = vastaus.replace(mj[key], mj[key+1:key+1+int(merkki)], 1)
        else:
            summa =  sum(entinen[-1:-len(sisalla)-1:-1][0]) 
            erotus = key - entinen[-1][1]
            #print(eka)
            eka = mj[entinen[-1][1]+1:key] + mj[key+1:]
            for s in range(len(sisalla)):
                vastaus = vastaus.replace(mj[key], eka[:int(merkki)], 1)#mj[key-erotus+1:key+1+int(merkki)-erotus], 1)
                #print(f"  {vastaus}")
                vastaus = vastaus.replace(mj[key], mj[key+1:key+1+int(merkki)], 1)
                #print(f"  {vastaus}")


        miinus += int(merkki)
        entinen.append((int(merkki), key))
        sisalla.append(int(merkki) + 1 + key)
        #print(vastaus)
print(vastaus)

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: 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