SPOJ

Before ACM can do anything, a budget must be prepared and the necessary financial support obtained. The main income for this action comes from Irreversibly Bound »

You just received another bill which you cannot pay because you lack the money. Unfortunately, this is not the first time to happen, and now you »

Maricruz have a lot of cards, she always uses her cards to build pyramids as shown in the following image: A pyramid card of 3 levels »

Abotrika is having a party because his team won the african cup so he is inviting his friends to eat some pizza. Unfortunately, Abotrika's friends can't »

Onotole has a lot of pyani. Each pyani has a number, writing on it. Pyanis with equal numbers are indistinguishable. Onotole knows everything, so, he knows »

The process of “breaking” an integer is defined as summing the squares of its digits. For example, the result of breaking the integer 125 is (12 »

There is given a rectangular bitmap of size n*m. Each pixel of the bitmap is either white or black, but at least one is white »

Alice and Bob need to send secret messages to each other and are discussing ways to encode their messages: Alice: “Let’s just use a very »

Hänschen dreams he is in a shop with an infinite amount of marbles. He is allowed to select n marbles. There are marbles of k different »

One of the secret chambers in Hogwarts is full of philosopher’s stones. The floor of the chamber is covered by h × w square tiles, where »