3,15,16,17,19,23,24,27,29,33,39,47,62,83,88,97,97
9,33,41,53,83,91,95
3,9,15,16,17,19,23,24,27,29,33,33,39,41,47,53,62,83,83,88,91,95,97,97,
a=list(map(int,input().split(",")))
b=list(map(int,input().split(",")))
c=[0]*(__________)
pa=pb=pc=0
while __________:
if __________:
c[pc]=a[pa]
pa+=1
else:
c[pc]=b[pb]
pb+=1
__________
while pa<len(a):
c[pc]=a[pa]
pa+=1
pc+=1
...
...
for i in range(len(a)+len(b)):
print(c[i],end=",")