#include <algorithm>
#include <iostream>
using namespace std;

int search_value,pause, ia[9]= {47,29,37,23,11,7, 5, 31, 41};
void ff();

int main()
{
	while(1)
		ff();
	return 0;
}

void ff()
{
	cout<<"input a number you need search:"<<endl;
	cin>>search_value;
	int * presult = find(&ia[0],&ia[9],search_value);
	cout<<"number "<<search_value<<(presult == &ia[9]? " yes ":" no")<<endl;
}