def compose(leng, summ, res):
if leng == 0:
print(res)
return
for i in range(summ + 1):
compose(leng - 1, summ -i, res + str(i) + " ")
compose(3, 2, "")# your code goes here
ZGVmIGNvbXBvc2UobGVuZywgc3VtbSwgcmVzKToKICAgIGlmIGxlbmcgPT0gMDoKICAgICAgICBwcmludChyZXMpCiAgICAgICAgcmV0dXJuCiAgICBmb3IgaSBpbiByYW5nZShzdW1tICsgMSk6CiAgICAgICAgY29tcG9zZShsZW5nIC0gMSwgc3VtbSAtaSwgcmVzICsgc3RyKGkpICsgIiAiKQoKY29tcG9zZSgzLCAyLCAiIikjIHlvdXIgY29kZSBnb2VzIGhlcmU=