Chef and his little brother are playing with sticks. They have total N sticks. Length of ith stick is Ai. Chef asks his brother to choose any four sticks and to make a rectangle with those sticks its sides. Chef warns his brother to not to break any of the sticks, he has to use sticks as a whole. Also, he wants that the rectangle formed should have the maximum possible area among all the rectangles that Chef's brother can make. Chef's little brother takes this challenge up and overcomes it. Can you also do so? That is, you have to tell whether it is even possible to create a rectangle? If yes, then you have to tell the maximum possible area of rectangle.

A band of thieves comes up with a series of rules for hiding their loot so that they are always able to find it. The rules are as follows: If the house is next to a lake, then the treasure does not go in the kitchen If the tree in the front yard is an elm, then the treasure is in the kitchen The tree in the front yard is an elm or the treasure is buried under the flagpole If the tree in the backyard is an oak then the treasure is in the garage. You observe that the house where the treasure is hidden is next to a lake. Where is the treasure?   discrete math

Can you please give me a code that runs properly this time Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'.A region is captured by flipping all 'O's into 'X's in that surrounded region.For example, for the following board,X X X XX O O XX X O XX O X XAfter capturing all regions, the board becomesX X X XX X X XX X X XX O X XThe algorithm should take an input file, named “input.txt”, and output the resulting board in the console.Sample input.txt6X X X X X OX O X O O XX X O O O XX X X O X XX O X X O OX X X X X XThe first line is a number indicating the size of the board; in the above example, 6 means the board is .Output for in console:X X X X X OX X X X X XX X X X X XX X X X X XX X X X O OX X X X X X

python  if we put a grid on the surface of Earth with a grid spacing of dx and dy in the longitude and latitude directions, respectively, the grid area (approximated as dx*dy) varies with latitude. Explain why that is.

You have 1000 bottles of soda, and exactly one is poisoned. You have 10 test strips whichcan be used to detect poison. A single drop of poison will turn the test strip positive permanently.You can put any number of drops on a test strip at once and you can reuse a test strip as many timesas you'd like (as long as the results are negative). However, you can only run tests once per day andit takes seven days to return a result. How would you figure out the poisoned bottle in as few daysas possible?Follow up: Write code to simulate your approach

I need help making a JAVA code