import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力(スペース改行関係なし)
		int n = sc.nextInt();
      	int kaisuu = 0;
      
      
		for(int i = 0 ; i < n ; i++){
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        }

		if(kaisuu ==3){
			// 出力
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力(スペース改行関係なし)
		int n = sc.nextInt();
      	int kaisuu = 0;
      
      
		for(int i = 0 ; i < n ; i++){
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        }

		if(kaisuu ==3){
			// 出力
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力(スペース改行関係なし)
		int n = sc.nextInt();
      	int kaisuu = 0;
      
      
		for(int i = 0 ; i < n ; i++){
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        }

		if(kaisuu ==3){
			// 出力
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
	} main {
		Scanner sc = new Scanner(System.in);
		// 整数の入力(スペース改行関係なし)
		int n = sc.nextInt();
      	int kaisuu = 0;
      
      
		for(int i = 0 ; i < n ; i++){
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        }

		if(kaisuu ==3){
			// 出力
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int kaisuu = 0; kaisuu 0 for(int i = 0 ; i < n ; i++){
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        } int i = 0 ; int i = 0 ; i 0 i < n i n i++ i++ i {
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        } {
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        } int n1 = sc.nextInt(); n1 sc.nextInt() sc.nextInt sc int n2 = sc.nextInt(); n2 sc.nextInt() sc.nextInt sc if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            } n1==n2 n1 n2 {
              kaisuu += 1;
            } kaisuu += 1 kaisuu 1 {
            kaisuu = 0;
            } kaisuu = 0 kaisuu 0 if(kaisuu ==3){
         	break;
         } kaisuu ==3 kaisuu 3 {
         	break;
         } break; if(kaisuu ==3){
			// 出力
			System.out.println("Yes");
		}else{
			System.out.println("No");
		} kaisuu ==3 kaisuu 3 {
			// 出力
			System.out.println("Yes");
		} System.out.println("Yes") System.out.println System.out System System.out "Yes" {
			System.out.println("No");
		} System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力(スペース改行関係なし)
		int n = sc.nextInt();
      	int kaisuu = 0;
      
      
		for(int i = 0 ; i < n ; i++){
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        }

		if(kaisuu ==3){
			// 出力
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力(スペース改行関係なし)
		int n = sc.nextInt();
      	int kaisuu = 0;
      
      
		for(int i = 0 ; i < n ; i++){
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        }

		if(kaisuu ==3){
			// 出力
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力(スペース改行関係なし)
		int n = sc.nextInt();
      	int kaisuu = 0;
      
      
		for(int i = 0 ; i < n ; i++){
        	int n1 = sc.nextInt();
        	int n2 = sc.nextInt();
          
          if(n1==n2){
              kaisuu += 1;
            }else{
            kaisuu = 0;
            }
          
         if(kaisuu ==3){
         	break;
         }
        }

		if(kaisuu ==3){
			// 出力
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
		
	}
}