Category: Competitive Programming

Someone is trying to break into Thapar University’s Database and steal sensitive research information. It is now up to us to stop this attack. Fortunately our defence mechanisms have traced the attacks to their source. The fastest way to stop the attacks is to disable the source.

For a given positive integer K of not more than 5 digits, write the value of the smallest palindrome larger than K to output. Numbers are always displayed without leading zeros. The first line contains integer T, the number of test cases. Integers K are given in the next t lines.

Reversed number is a number written in Arabic numerals but the order of digits is reversed. The first digit becomes last and vice versa. For example, if the number is 1245, it will become 5421. Note that all the leading zeros are omitted. That means if the number ends with a zero, the zero is lost by reversing (e.g. 1200 gives 21).

Pooja would like to withdraw X $US from an ATM. The cash machine will only accept the transaction if X is a multiple of 5, and Pooja’s account balance has enough cash to perform the withdrawal transaction (including bank charges). For each successful withdrawal the bank charges 0.50 $US. Calculate Pooja’s account balance after an attempted transaction.

The captain of the ship TITANIC needs to select the crew for the ship. The contestants have to stand in a line. They are given the numbers in the order in which they stand, starting from 1. The captain then removes all the contestants that are standing at an odd position.