Category Archives: AUG13

Little Elephant and Lemonade : CodeChef Problem LELEMON

Problem link: http://www.codechef.com/AUG13/problems/LELEMON

Problem Statement:
Little Elephant likes lemonade.

When Little Elephant visits any room, he finds the bottle of the lemonade in that room that contains the greatest number of litres of lemonade and drinks it all.

There are n rooms (numbered from 0 to n-1), each contains C_i bottles. Each bottle has a volume (in litres). The first room visited by Little Elephant was P_0th, the second P_1th, …, the m-th P_{m-1}th room. Note that Little Elephant may visit a room more than once.

Find for Little Elephant the total volume of lemonade he has drunk.
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Hello Hello : CodeChef Problem HELLO

Problem link: http://www.codechef.com/AUG13/problems/HELLO/

Problem Statement:
Chef talks a lot on his mobile phone. As a result he exhausts his talk-value (in Rokdas) very quickly. One day at a mobile recharge shop, he noticed that his service provider gives add-on plans which can lower his calling rates (Rokdas/minute). One of the plans said “Recharge for 28 Rokdas and enjoy call rates of 0.50 Rokdas/min for one month”. Chef was very pleased. His normal calling rate is 1 Rokda/min. And he talked for 200 minutes in last month, which costed him 200 Rokdas. If he had this plan activated, it would have costed him: 28 + 0.5*200 = 128 Rokdas only! Chef could have saved 72 Rokdas. But if he pays for this add-on and talks for very little in the coming month, he may end up saving nothing or even wasting money. Now, Chef is a simple guy and he doesn’t worry much about future. He decides to choose the plan based upon his last month’s usage.

There are numerous plans. Some for 1 month, some for 15 months. Some reduce call rate to 0.75 Rokdas/min, some reduce it to 0.60 Rokdas/min. And of course each of them differ in their activation costs. Note – If a plan is valid for M months, then we must pay for (re)activation after every M months (once in M months). Naturally, Chef is confused, and you (as always) are given the task to help him choose the best plan.
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Splitting Candies : CodeChef Problem SPCANDY

Problem link: http://www.codechef.com/AUG13/problems/SPCANDY/

Problem Statement:
Cyael is a teacher at a very famous school in Byteland and she is known by her students for being very polite to them and also to encourage them to get good marks on their tests.

Then, if they get good marks she will reward them with candies đŸ™‚ However, she knows they are all very good at Mathematics, so she decided to split the candies evenly to all the students she considers worth of receiving them, so they don’t fight with each other.

She has a bag which initially contains N candies and she intends to split the candies evenly to K students. To do this she will proceed as follows: while she has more than K candies she will give exactly 1 candy to each student until she has less than K candies. On this situation, as she can’t split candies equally among all students she will keep the remaining candies to herself.

Your job is to tell how many candies will each student and the teacher
receive after the splitting is performed.
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