Hi guys! I'm trying to find an algorithm or idea for solving this problem: For array a[] has n element ( 2 <= n <= 10^5 , 1 <= a[i] <= 1e5 ) , find one co-prime number in this array ( if it doesn't have any,print -1) , simply: Find (i;j) ( 1<= i < j ...
ALGORITHM ON FINDING TWIN PRIME NUMBERSKaratay, MelikeAylanc, Atakanzkan, SerkanJournal of Modern Technology & Engineering
#include<algorithm> #include<string> using namespace std; int main() { vector<int>prime; int i=0,j=0; prime.push_back(2); for(i=3;i<100;i++) { for(j=0;j<prime.size();j++) { if(i%prime[j]!=0) //do something
In the fourth sample . Thus, the answer to the problem is1. 思路是主要的进制的思想 代码: #include<cstdio>#include<cstring>#include<iostream>#include<algorithm>#include<queue>#include<stack>#include<set>#include#include<vector>#include<cmath>#definemod 1000000007constintmaxn=1e5+5; typedeflon...
Thomas Ramsey, Sets of integers with no long arithmetic progressions generated by the greedy algorithm, Math. Comput., 33 (1979) 1353–1359. MathSciNet MATH Google Scholar V. A. Golubev, Faktorisation der Zahlen der Form x3 ± 4x2 + 3x ± 1, Anz. Oesterreich. Akad. Wiss. Math.-...
#include <iostream>#include<cstdio>#include<fstream>#include<algorithm>#include<cmath>#include<deque>#include<vector>#include<queue>#include<string>#include<cstring>#include#include<stack>#include<set>#include<sstream>#definemod 1000000007#defineeps 1e-6#definell long long#defineINF 0x3f3f3f3f...
Explanation of the Algorithm First we will analyse the main function and then we will go in IsPrime() function. The main program does the following: Write the header where we explain what we do in this program. We create “do wile” circle that will enter the numbers to be examined. ...
Another algorithm to find prime is called Sieve of Eratosthenes and you can find the implementation of it in the replies of this thread:http://www.cplusplus.com/forum/general/181815/ Last edited onDec 27, 2015 at 10:31pm Dec 27, 2015 at 10:30pm ...
#include <algorithm> #include <string.h> #include <cmath> #define max_size 1000010 using namespace std; bool prime[max_size]; void init(){ memset(prime,1,sizeof(prime)); prime[0] = false; prime[1] = false; int x = sqrt(max_size) + 1 ; ...
run time complexity ofO(nloglogn)operations and usesO(n)memory. Furthermore primesieve uses thebucket sievealgorithm which improves the cache efficiency when generating primes > 232. primesieve uses 8 bytes per sieving prime, in practice its memory usage is aboutπ(n)×8bytes per thread...