import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.Scanner;
public class Main{
public static void main
(String[] arg
) {
Scanner sc
= new Scanner
(System.
in); int total = sc.nextInt();
for(int i = 0;i<total;i++){
inputs[i]=sc.next();
}
System.
out.
println(getStable
(inputs
)); sc.close();
}
string[] temp;
int[][] nums=new int[ary.length][3];
for(int i=0;i<ary.length;i++){
temp = ary[i].split("\\.");
for(int j=0;j<temp.length;j++){
nums
[i
][j
]=Integer.
valueof(temp
[j
]); }
}
int maxMajor=0;int location=0;
for(int i=0;i<ary.length;i++){
if(nums[i][0]>maxMajor && nums[i][1]%2==0){
maxMajor=nums[i][0];
location=i;
}
}
if(maxMajor==0){
return "no stable available";
}
return ary[location];
}
}
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