ctf解题--考考你的程序功底

题目

吆喝！你给我来真的是吧，那我不客气了哈！
解题链接： http://ctf5.shiyanbar.com/program/1/

解题

• 代码

import numpy as np


def consecutive_multiply(arr):
    ret = 1l
    for val in arr:
        ret *= val
    return ret


arr=[[8,2,22,97,38,15,0,40,0,75,4,5,7,78,52,12,50,77,91,8], [49,49,99,40,17,81,18,57,60,87,17,40,98,43,69,48,4,56,62,0], [81,49,31,73,55,79,14,29,93,71,40,67,53,88,30,3,49,13,36,65], [52,70,95,23,4,60,11,42,69,24,68,56,1,32,56,71,37,2,36,91], [22,31,16,71,51,67,63,89,41,92,36,54,22,40,40,28,66,33,13,80], [24,47,32,60,99,3,45,2,44,75,33,53,78,36,84,20,35,17,12,50], [32,98,81,28,64,23,67,10,26,38,40,67,59,54,70,66,18,38,64,70], [67,26,20,68,2,62,12,20,95,63,94,39,63,8,40,91,66,49,94,21], [24,55,58,5,66,73,99,26,97,17,78,78,96,83,14,88,34,89,63,72], [21,36,23,9,75,0,76,44,20,45,35,14,0,61,33,97,34,31,33,95], [78,17,53,28,22,75,31,67,15,94,3,80,4,62,16,14,9,53,56,92], [16,39,5,42,96,35,31,47,55,58,88,24,0,17,54,24,36,29,85,57], [86,56,0,48,35,71,89,7,5,44,44,37,44,60,21,58,51,54,17,58], [19,80,81,68,5,94,47,69,28,73,92,13,86,52,17,77,4,89,55,40], [04,52,8,83,97,35,99,16,7,97,57,32,16,26,26,79,33,27,98,66], [88,36,68,87,57,62,20,72,3,46,33,67,46,55,12,32,63,93,53,69], [04,42,16,73,38,25,39,11,24,94,72,18,8,46,29,32,40,62,76,36], [20,69,36,41,72,30,23,88,34,62,99,69,82,67,59,85,74,4,36,16], [20,73,35,29,78,31,90,1,74,31,49,71,48,86,81,16,23,57,5,54], [01,70,54,71,83,51,54,69,16,92,33,48,61,43,52,1,89,19,67,48]]

arr = np.array(arr)
max_val = 0l
for row in range(0,20):
    for col in range(0,17):
        max_val = max(max_val, consecutive_multiply(arr[row,col:col+4]))

for col in range(0,20):
    for row in range(0,17):
        max_val = max(max_val, consecutive_multiply(arr[row:row+4, col]))


for i in range(0,17):
    max_val = max(max_val, consecutive_multiply([arr[i, i], arr[i+1,i+1], arr[i+2,i+2], arr[i+3,i+3]]))
for i in range(0,17):
    max_val = max(max_val, consecutive_multiply([arr[i, 19-i], arr[i+1,18-i], arr[i+2,17-i], arr[i+3,16-i]]))


for row in range(0,17):
    for col in range(0,17):
        max_val = max(max_val, consecutive_multiply([arr[row, col], arr[row+1,col+1], arr[row+2,col+2], arr[row+3,col+3]]))
        max_val = max(max_val, consecutive_multiply([arr[row+3, col], arr[row+2,col+1], arr[row+1,col+2], arr[row,col+3]]))



print max_val

• 将运行结果输入得到key