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1133. Fibonacci SequenceTime limit: 1.0 secondMemory limit: 64 MBis an infinite sequence of integers that satisfies to Fibonacci conditionFi+2=Fi+1+Fifor any integeri. Write a program, which calculates the value ofFnfor the given values ofFiandFj.InputThe input contains five integers in the followin 阅读全文
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1352. Mersenne PrimesTime limit: 1.0 secondMemory limit: 64 MBDefinition.If the number 2N−1 is prime then it is called aMersenne prime number.For example, 22−1 — the first Mersenne prime, 23−1 — the second Mersenne prime, 211213−1 — the 23rd, 2216091−1 — the 31st.It’s a hard problem to find those nu 阅读全文
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1086. CryptographyTime limit: 2.0 secondMemory limit: 64 MBWhile preparing this problem set the jury has run into the following problem: it was necessary to send by e-mail the texts of the problems. As it is well known, e-mail is not reliable, messages are sent not enciphered, there is a danger that 阅读全文
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1118. Nontrivial NumbersTime limit: 2.0 secondMemory limit: 64 MBSpecialists of SKB Kontur have developed a unique cryptographic algorithm for needs of information protection while transmitting data over the Internet. The main advantage of the algorithm is that you needn't use big numbers as key 阅读全文
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Channel AllocationTime Limit : 2000/1000ms (Java/Other)Memory Limit : 20000/10000K (Java/Other)Total Submission(s) : 18Accepted Submission(s) : 7Problem DescriptionWhen a radio station is broadcasting over a very large area, repeaters are used to retransmit the signal so that every receiver has a st 阅读全文
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Shredding CompanyTime Limit : 2000/1000ms (Java/Other)Memory Limit : 20000/10000K (Java/Other)Total Submission(s) : 15Accepted Submission(s) : 11Problem DescriptionYou have just been put in charge of developing a new shredder for the Shredding Company Although a "normal" shredder would jus 阅读全文
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PotsTime Limit : 2000/1000ms (Java/Other)Memory Limit : 131072/65536K (Java/Other)Total Submission(s) : 31Accepted Submission(s) : 14Special JudgeProblem DescriptionYou are given two pots, having the volume ofAandBliters respectively. The following operations can be performed:FILL(i) fill the poti(1 阅读全文
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Prime PathTime Limit : 2000/1000ms (Java/Other)Memory Limit : 131072/65536K (Java/Other)Total Submission(s) : 21Accepted Submission(s) : 18Problem DescriptionThe ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-di 阅读全文
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Find The MultipleTime Limit : 2000/1000ms (Java/Other)Memory Limit : 20000/10000K (Java/Other)Total Submission(s) : 43Accepted Submission(s) : 21Special JudgeProblem DescriptionGiven a positive integer n, write a program to find out a nonzero multiple m of n whose decimal representation contains onl 阅读全文
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Catch That CowTime Limit : 4000/2000ms (Java/Other)Memory Limit : 131072/65536K (Java/Other)Total Submission(s) : 67Accepted Submission(s) : 22Problem DescriptionFarmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a pointN(0 ≤N≤ 100,000) o 阅读全文