Kinon and String

Kinon is the neatest man of his magnificence and every person adores him. He desires to galvanize a woman of his magnificence with the aid of using fixing her problems. The girl has a binary string and she or he loves the whole thing in sequence. She desires to set up that binary string in one of the manners that it seems appealing. She requested Kinon if he can pick any indexes such that $s[i]=