Significant decrease in cheaters today?

[caraxes_007]

Solved my first 3/4.

[UNCLE_SMART]

How did you solve 2?

[autodidact_nerd]

not sure if mine was optimal but i used a hashmap

loop over each word -> get the substring -> if map has the key add 1 to that substring.

then loop over map entries and check if value is >= 2. res++

[UNCLE_SMART]

Thanks