line1='Q11v6V2f7I18z10s10k3u1M8b19i9Z8C2n11M11N15x4I13f17K5D19X11z2p12T14N8F16t11S8B2a17C18w14'
s=''
q=''
result=''
for i in range(len(line1)):
    try:
        int(line1[i])
        a=str(line1[i])
        s+=a
    except:
        if s=='':
            q = line1[i]
        else:
            int(s)
            for n in range(s):
                result+=str(q)
            q=line1[i]
print(result)

 line1[i] = int(line1[i])

 import re
s ='qQ3Ww4Ee5R9'
ch = [i for i in re.split(r'[0-9]+',s) if i]
num = [i for i in re.split(r'[^0-9]+',s) if i]
out = ''
for i,x in enumerate(ch):
    out += x*int(num[i])
print(out)