find nth prime number c

6 points of prime number obtained by screening method, 6 points of prime number obtained by screening method11: Prime Number of input objects View Submit Statistics Question Total time limit: 5000 ms Memo

[TOJ 4705] maximum prime number, toj4705 Prime Number Description Given a number of n, I asked if we could extract several consecutive bits from the order from left to right and combine them into a prime

POJ 2739 Sum of Consecutive Prime Numbers (Prime number) POJ 2739 Sum of Consecutive Prime Numbers (Prime number) Question: I will give you a natural number X of less than 10000, and t

, traverse to sqrt (n ), because if the sqrt (n) is not found on the left, then the right side must not be able to find the approximate. The C + + code is as follows:BOOL isprime_2 (int num) { int tmp =sqrt (num); for (int i= 2;i 3) Another methodMethod (2) should be the most common judgment algorithm, the time Complexity O (sqrt (n)), the speed is much faster than the method (1) O (n). Recently on the Internet by chance to see another more ef

give you a number, ask you to find the number of the largest prime factor in the list of prime numbers position. largest prime factor Time limit:5000/1000 MS (java/others) Memory limit:32768/32768 K (java/others)Problem Descrip

Directly on the question--"Portal: http://www.luogu.org/problem/show?pid=1217"Source Usaco,nocow translation, Luo Valley reprint, Understand (F_Q) children's shoes can go to Usaco official website to stroll ...P1217 [USACO1.5] palindrome prime number Prime palindromesTitle DescriptionSince 151 is both a prime and a pal

Find the nth digitTime limit:1000/1000 MS (java/others) Memory limit:32768/32768 K (java/others)Total Submission (s): 8801 Accepted Submission (s): 2504problem DescriptionAssumptions:S1 = 1S2 = 12S3 = 123S4 = 1234.........S9 = 123456789S10 = 1234567891S11 = 12345678912............S18 = 123456789123456789..................Now we're going to connect all the strings together.S = 1121231234.......12345678912345

des the number of representations for the input Integer as the sum of one or more consecutive prime numbers. no other characters shoshould be inserted in the output. Sample Input 2 3 17 41 20 666 12 53 0 Sample output 1 1 2 3 0 0 1 2 Source Japan 2005 Question: A number can be obtained by summation of several consecutive

need a computer program to minimize the cost. You don ' t know some very cheap software gurus?-in fact, I do. You see, there are this programming contest going on ... Help the Prime minister to find the cheapest prime path between any and given Four-digit primes! The first digit must be nonzero, of course. Here's a solution in the case above. 1033 173

Find the nth digit Time limit:1000/1000 MS (java/others) Memory limit:32768/32768 K (java/others) Total submission (s): 880 Accepted Submission (s): 325 Problem Description hypothesis:S1 = 1S2 = 12S3 = 123S4 = 1234.........S9 = 123456789S10 = 1234567891S11 = 12345678912............S18 = 123456789123456789..................Now we're going to connect al

Find the nth Digit Time Limit: 1000/1000 MS (Java/others) memory limit: 32768/32768 K (Java/Others)Total submission (s): 8363 accepted submission (s): 2385 Problem description hypothesis:S1 = 1S2 = 12S3. = 123S4 = 1234.........S9 = 123456789S10 = 1234567891S11= 12345678912............S18= 123456789123456789..................Now we connect all stringsS = 1121231234 ...... 123456789123456789112345678912 .....

Find the nth Digit Time Limit: 1000/1000 MS (Java/others) memory limit: 32768/32768 K (Java/Others)Total submission (s): 8351 accepted submission (s): 2381 Problem description hypothesis: S1 = 1 S2 = 12 S3. = 123 S4 = 1234 ......... S9 = 123456789 S10 = 1234567891 S11= 12345678912 ............ S18= 123456789123456789 .................. Now we connect all strings S = 1121231234 ...... 1234567891234567891123

. There is no adjacent primes. Problem Solving Ideas: First of all, unlike ordinary prime number screening, because the upper limit of u is very large, only one time from 2-2147483647 of the filter will definitely time out, and do not work, unless the improved algorithm, otherwise you need to change ideas. Then, you can consider only the number of l-u within th