37 lines
970 B
Markdown
37 lines
970 B
Markdown
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## Simple Programming
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The main idea finding the flag is some simple counting in a file.
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#### Step-1:
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After we download `data.dat` from the cloud, we understand that it is has 10,000 lines. So we definitely need to write up a script to get answer.
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#### Step-2:
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So I quickly drafted up `Flag.py` script to get number of such lines:
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```
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count = 0
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file = 'data.dat'
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with open(file) as f:
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l = f.readlines()
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for line in l:
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zero = line.count('0')
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one = line.count('1')
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'''the condition where the number of '0' is divisible by 3
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OR the number of '1' is divisible by 2'''
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if (zero%3 == 0) or (one%2 == 0):
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count = count + 1
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print("Number of lines: " + str(count))
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f.close()
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```
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#### Step-3:
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When we execute this script by `python3 Flag.py`, we get the flag.
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Output:
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`Number of lines: 6662`
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#### Step-4:
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Finally the flag becomes:
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`CTFlearn{6662}`
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