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package amanda_tian_cccl1_test2;
import java.util.Scanner;
import java.util.Stack;

/**
 *
 * @author amand
 */
public class ItsColdHere {
    public static void main(String[]args){
        Scanner input = new Scanner(System.in);
        String ncity = "";
        int temperature = 0;
        int min = 200;
        int count = 0;
        Stack<Integer> temp = new Stack<Integer>();
        Stack<String> city = new Stack<String>();
        do{
            ncity = input.next();
            temperature = input.nextInt();
            city.push(ncity);
            temp.push(temperature);
        }
        while(!city.peek().equals("Waterloo"));

        if(temp.peek() < min){
            min = temp.peek();
            temp.pop();
            count++;
        }
        for(int i = 0; i < city.size() - count + 1; i++){
            city.pop();
        }

        System.out.print(city.peek());
    }
}