金额查错 python 蓝桥杯

sum1 = int(input())
n = int(input())
m = []
for i in range(n):
    a = int(input())
    m.append(a)
visit = [0 for i in range(n)]
dd = []
def dfs(visit,i):
    global m,sum1,dd
    if sum(visit)==sum1:
        k = []
        for mm in range(len(m)):
            if visit[mm]!=0:
                k.append(visit[mm])
        if k not in dd:
            dd.append(k)
        return 
    if i==len(m):
        return
    if sum(visit)         visit[i] = m[i]
        dfs(visit,i+1)
    visit[i] = 0
    dfs(visit,i+1)

cisu = 0
sum1 = sum(m)-sum1
m.sort()
dfs(visit,0)
for j in range(len(dd)):
    for k in dd[j]:
        print(k,end=' ')
    print()