目录
1.求和-好未来
n, m = list(map(int, input().split()))
li = []
def f(n, m, l, k):
if m == 0:
print(' '.join(l))
for i in range(k, n + 1):
if i > m:
break
l.append(str(i))
f(n, m - i, l, i + 1)
l.pop()
f(n, m, li, 1)