import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int count = 0;
        int i = sc.nextInt();
        for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        }
        System.out.println("No");
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz