题解 | #24点游戏算法#

from itertools import permutations


def func():
    nums = list(map(str, input().split()))
    q = permutations(nums)
    op = ["+", "-", "*", "/"]
    # flag = False
    for p in q:
        for i in op:
            for j in op:
                for k in op:
                    in1 = eval(p[0] + i + p[1])
                    in2 = eval(str(in1) + j + p[2])
                    in3 = eval(str(in2) + k + p[3])
                    if in3 == 24:
                        # flag = True
                        return 'true'
    else:
        return 'false'


print(func())

看了大佬的答案才弄懂，括号也考虑了，妙啊！！！