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Source Code
Language
#include<cmath>
#include<iostream>
using namespace std;
int n,a[10001];
bool isprime(int n)
{
if (n<2) return false;
if (n==2) return true;
//ε€ζ n ζ―δΈζ―η΄ ζ°
for (int i=2; i<=sqrt(n); ++i)
{
if (n%i==0)
return false;
}
return true;
}
int* find(){
for (int i=1; i<=n; ++i)
if (isprime(a[i]))
return &a[i];
return NULL;
}
int main() {
cin>>n;
for (int i=1; i<=n; ++i)
cin>>a[i];
int *p=find();
if (p!=NULL) cout<<*p;
else printf("can't find!");
return 0;
}
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