import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc=new Scanner(System.in); int n=sc.nextInt(); int index=1;int max=0; for (int i = 0; i < n; i++) { int m=sc.nextInt(); if(m==0) {System.out.println(0);return;} int k=m; for (int j =2; j <=Math.sqrt(k); j++) { while(k%j==0){ k=k/j; if(j>max){index=m; max=j; } } } if(k>1){ if(k>max){ index=m; max=k; } } } System.out.println(index); } }
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