Broken Telephone

i don’t understand the second simple.

1 3 1 1 1
Example 2: First 3 players misheard the message or whispered it wrongly.
help me,thank you.

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read the problem statement carefully

it’s actually quite simple, i’ll explain this in boolean expression, but maybe you need different kind of approach as the limit is too big for this approach

5 1 3 1 1 1

5->1 both false

1->3 both false, but 1 has been counted

3->1 both false, but 3 has been counted

1->1 both true

1->1 both true

so in the end :
[false] [false] [false] [false] [true] [true]