import  java.util.Scanner;
public class Main{
	public static void main(String[ ] args){
	Scanner sc = new Scanner(System.in);
		int A1,A2,B1,B2,C1,C2,D1,D2,E1,E2,F1,F2,G1,G2,sum;
		A1 = sc.nextInt();A2 = sc.nextInt();
		B1 = sc.nextInt();B2 = sc.nextInt();
		C1 = sc.nextInt();C2 = sc.nextInt();
		D1 = sc.nextInt();D2 = sc.nextInt();
		E1 = sc.nextInt();E2 = sc.nextInt();
		F1 = sc.nextInt();F2 = sc.nextInt();
		G1 = sc.nextInt();G2 = sc.nextInt();
		if(A1+A2>=B1+B2) 
			sum=A1+A2;
		else sum=B1+B2;
		if(sum<C1+C2)
			sum=C1+C2;
		if(sum<D1+D2)
			sum=D1+D2;
		if(sum<F1+F2)
			sum=F1+F2;
		if(sum<G1+G2)
			sum=G1+G2;
		if(sum<=8)
			System.out.print(0);
		else if(sum==A1+A2)
			System.out.print(1);
		else if(sum==B1+B2)
			System.out.print(2);
		else if(sum==C1+C2)
			System.out.print(3);
		else if(sum==D1+D2)
			System.out.print(4);
		else if(sum==E1+E2)
			System.out.print(5);
		else if(sum==F1+F2)
			System.out.print(6);
		else if(sum==G1+G2)
			System.out.print(7);
	}
}