You are playing the following Bulls and Cows game with your friend: You write down a number and ask your friend to guess what the number is. Each time your frie...
Jamie is a very popular girl and has quite a lot of friends, so she always keeps a very long contact list in her cell phone. The contact list has become so long...
Lee just became Master in Codeforces, and so, he went out to buy some gifts for his friends. He bought n integers, now it’s time to distribute them between his ...
n people came to a party. Then those, who had no friends among people at the party, left. Then those, who had exactly 1 friend among those who stayed, left as w...
#some words Sometimes in life, You find a special friend; Someone who changes your life just by being part of it. Someone who makes you laugh until you can'...