def gouwu(money):
for i in range(0, money // 15 + 1):
for j in range(0, money // 2 + 1):
for k in range(0, ① ):
if ② :
print('可选择的购买组合:\t购买洗发水 {} 瓶,香皂 {} 块,牙刷 {}个。'.format( ③ ))
gouwu(100)
money//5+1(3分)
i*15+j*2+k*5==money(4分)
i,j,k(3分)