Educational Codeforces Round 89 (Rated for Div. 2) C. Palindromic Paths
1307. Verbal Arithmetic Puzzle
Given an equation, represented by words on the left side and the result on the right side.
You need to check if the equation is solvable under the following rules:
- Each character is decoded as one digit (0 - 9).
- No two characters can map to the same digit.
- Each words[i] and result are decoded as one number without leading zeros.
- Sum of numbers on the left side (words) will equal to the number on the right side (result).
Return true if the equation is solvable, otherwise return false.
1298. Maximum Candies You Can Get from Boxes
You have n boxes labeled from 0 to n - 1. You are given four arrays: status, candies, keys, and containedBoxes where:
- status[i] is 1 if the ith box is open and 0 if the ith box is closed,
- candies[i] is the number of candies in the ith box,
- keys[i] is a list of the labels of the boxes you can open after opening the ith box.
- containedBoxes[i] is a list of the boxes you found inside the ith box.
You are given an integer array initialBoxes that contains the labels of the boxes you initially have. You can take all the candies in any open box and you can use the keys in it to open new boxes and you also can use the boxes you find in it.
Return the maximum number of candies you can get following the rules above.
1330. Reverse Subarray To Maximize Array Value
You are given an integer array nums. The value of this array is defined as the sum of |nums[i] - nums[i + 1]| for all 0 <= i < nums.length - 1.
You are allowed to select any subarray of the given array and reverse it. You can perform this operation only once.
Find maximum possible value of the final array.
Given an integer array nums, return the sum of divisors of the integers in that array that have exactly four divisors. If there is no such integer in the array, return 0.
1418. Display Table of Food Orders in a Restaurant
Given the array orders, which represents the orders that customers have done in a restaurant. More specifically orders[i]=[customerNamei,tableNumberi,foodItemi] where customerNamei is the name of the customer, tableNumberi is the table customer sit at, and foodItemi is the item customer orders.
Return the restaurant’s “display table”. The “display table” is a table whose row entries denote how many of each food item each table ordered. The first column is the table number and the remaining columns correspond to each food item in alphabetical order. The first row should be a header whose first column is “Table”, followed by the names of the food items. Note that the customer names are not part of the table. Additionally, the rows should be sorted in numerically increasing order.