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GridlandTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 5279 Accepted: 2907DescriptionBackground For years, computer scientists have been trying to find efficient solutions to different computing problems. For some of them efficient algorithms are already available, these are the "eas 阅读全文
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Big NumberTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 20374 Accepted: 6472DescriptionIn many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, encryption, etc. In this problem you are given a number, you ha 阅读全文
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IntersectionTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 7166 Accepted: 1836DescriptionYou are to write a program that has to decide whether a given line segment intersects a given rectangle. An example: line: start point: (4,9) end point: (11,2) rectangle: left-top: (1,5) right-bottom: 阅读全文
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FactorialTime Limit: 1500MS Memory Limit: 65536KTotal Submissions: 11237 Accepted: 6979DescriptionThe most important part of a GSM network is so called Base Transceiver Station (BTS). These transceivers form the areas called cells (this term gave the name to the cellular phone) and every phone conne 阅读全文
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Cabric Number ProblemTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 7858 Accepted: 2414DescriptionIf we input a number formed by 4 digits and these digits are not all of one same value, then it obeys the following law. Let us operate the number in the following way: (1) Arrange the digits 阅读全文
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Ugly NumbersTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 15213 Accepted: 6714DescriptionUgly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, ... shows the first 10 ugly numbers. By convention, 1 is included. Given the integer n,wr 阅读全文
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MultiplyTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 4634Accepted: 2466Description6*9 = 42" is not true for base 10, but is true for base 13. That is, 6(13) * 9(13) = 42(13) because 42(13) = 4 * 131 + 2 * 130 = 54(10). You are to write a program which inputs three integers p, q, and 阅读全文
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Mileage BankTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 11515Accepted: 4779DescriptionMileage program of ACM (Airline of Charming Merlion) is really nice for the travelers flying frequently. Once you complete a flight with ACM, you can earn ACMPerk miles in your ACM Mileage Bank depende 阅读全文
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Word AmalgamationTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 6063Accepted: 3011DescriptionIn millions of newspapers across the United States there is a word game called Jumble. The object of this game is to solve a riddle, but in order to find the letters that appear in the answer it is 阅读全文
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Self NumbersTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 16385Accepted: 9189DescriptionIn 1949 the Indian mathematician D.R. Kaprekar discovered a class of numbers called self-numbers. For any positive integer n, define d(n) to be n plus the sum of the digits of n. (The d stands for digi 阅读全文
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The Hardest Problem EverTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 17235Accepted: 9509DescriptionJulius Caesar lived in a time of danger and intrigue. The hardest situation Caesar ever faced was keeping himself alive. In order for him to survive, he decided to create one of the first c 阅读全文
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Tanning SalonTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 5384Accepted: 2943DescriptionTan Your Hide, Inc., owns several coin-operated tanning salons. Research has shown that if a customer arrives and there are no beds available, the customer will turn around and leave, thus costing the 阅读全文
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SafecrackerTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 1229Accepted: 763Description"The item is locked in a Klein safe behind a painting in the second-floor library. Klein safes are extremely rare; most of them, along with Klein and his factory, were destroyed in World War II. Fort 阅读全文
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Magnificent MeatballsTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 5124Accepted: 3455DescriptionSam and Ella run a catering service. They like to put on a show when serving meatballs to guests seated at round tables. They march out of the kitchen with pots of meatballs and start serving a 阅读全文
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THE DRUNK JAILERTime Limit: 1000MSMemory Limit: 10000KTotal Submissions: 17539Accepted: 11167DescriptionA certain prison contains a long hall of n cells, each right next to each other. Each cell has a prisoner in it, and each cell is locked. One night, the jailer gets bored and decides to play a gam 阅读全文