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Colorful RainbowsTime Limit:2 Seconds Memory Limit:65536 KBEvelyn likes drawing very much. Today, she draws lots of rainbows on white paper of infinite size, each using a different color. S...

The StaircasesTime Limit:2 Seconds Memory Limit:65536 KBOne curious child has a set of N little bricks. From these bricks he builds different staircases. Staircase consists of steps of diff...

There are three piles of beans. TT and DD pick any number of beans from any pile or the same number from any two piles by turns. Who get the last bean will win. TT and DD are very clever.Input...

Alice and Bob are playing a game. This game is played with several identical pots and one marble. When the game starts, Alice puts the pots in one line and puts the marble in one of the pots. After th...

Let f(n) be the number of factors of integern.Your task is to count the number of i(1 <= i <n) that makes f(i) = f(n).InputOnenper line (1 <n<= 1000000).There are 10000 lines...

Superbotis an interesting game which you need to control the robot on anN*Mgrid map.As you see, it's just a simple game: there is a control panel with four direction left (1stposition), right ...