dic = { '2':2,'3':3,'4':4,'5':5,'6':6,'7':7,'8':8, '9':9,'10':10,'J':11,'Q':12,'K':13,'A':1 } res = [] def dfs(s,nums,out): if len(nums) == 0 and abs(24-out)<0.0001: res.append(s) elif s == '': for i in range(len(nums)): dfs(s+nums[i],nums[:i]+nums[i+1:],out=dic[nums[i]]) else: for i in range(len...