Pakkaus

a = "2ABC3CD"
text = ""
x = 0
c = len(a)
while x < c-1:
    num = ""
    if a[x].isdigit():
        num = a[x]
        for y in range(x+1, c):
            num = int(num)
            if not a[y].isdigit():
                for i in range(y, c):
                    if a[i].isdigit():
                        text += num * a[y:i]
                        x = i-1
                        break
                    elif i == c-1:
                        text += num * a[y:c]
                        x = c
                        break
                break
            num += a[y]
    x += 1
print(text)

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 1

Verdict: WRONG ANSWER

Test 3

Group: 1

Verdict: WRONG ANSWER

Test 4

Group: 1

Verdict: WRONG ANSWER

Test 5

Group: 1

Verdict: WRONG ANSWER

Test 6

Group: 2

Verdict: WRONG ANSWER

Test 7

Group: 2

Verdict: WRONG ANSWER

Test 8

Group: 2

Verdict: WRONG ANSWER

Test 9

Group: 2

Verdict: WRONG ANSWER

Test 10

Group: 2

Verdict: WRONG ANSWER

Test 11

Group: 3

Verdict: WRONG ANSWER

Test 12

Group: 3

Verdict: WRONG ANSWER

Test 13

Group: 3

Verdict: WRONG ANSWER

Test 14

Group: 3

Verdict: WRONG ANSWER

Test 15

Group: 3

Verdict: WRONG ANSWER