- 39m 6s Left Help All 1 1 Buy Letters Coding Description Problem Statement Ravi Went To A Letters Shop To Buy The Some L 1 (253.36 KiB) Viewed 19 times
39m 6s left Help All 1 1. Buy Letters Coding Description Problem Statement Ravi went to a letters shop to buy the some letters in sequence such that he can create a string 's' with bought letters.. The shopkeeper has put the total of n letters in a line which are available to sell, and sets the price of i'th letter as (n-1) coins, where is the index of each letter in line starting from 0 to n-1. If Ravi has bought the i'th letter than he can't buy the letters of (0 to i'th) index any more. Also, Ravi will buy the letters in a sequence, such that the sequence form the string s. At what minimum price can Ravi buy the letters he want to buy. Input Format • First line will be the string 's that Ravi want to create after buying the letters. • Second line will be the string 'str' of n letters, that shopkeeper has arranged the letters to sell. Constraints • (1 <= s.size() <= le5) (1 <= str.size() <= 1e5) • it is guaranteed that all the letters in both the strings are the lowercase english alphabets. • Output Format • Print the minimum price in which Ravi can buy the letters or -1 if it is impossible to buy all the letters of s, in a correct 1 1 1 1 20 21 22 23 24 25 Test Re