import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i <=4; i++) {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        }
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i <=4; i++) {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        }
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i <=4; i++) {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        }
    } main {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i <=4; i++) {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) for (int i = 0; i <=4; i++) {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        } int i = 0; int i = 0; i 0 i <=4 i 4 i++ i++ i {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        } {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        } if(sc.nextLong()==0){
                System.out.println(i+1);
            } sc.nextLong()==0 sc.nextLong() sc.nextLong sc 0 {
                System.out.println(i+1);
            } System.out.println(i+1) System.out.println System.out System System.out i+1 i 1 String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i <=4; i++) {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        }
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i <=4; i++) {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        }
    }
} Main
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        for (int i = 0; i <=4; i++) {
            if(sc.nextLong()==0){
                System.out.println(i+1);
            }
        }
    }
}