import java.util.*;
import java.io.*;
public class Main {
    public static void main(String[] args) throws Exception {       
        Scanner sc = new Scanner(System.in);
        for(int i=0;i<5;i++) {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        }
    }
} import java.util.*; util.* java import java.io.*; io.* java public class Main {
    public static void main(String[] args) throws Exception {       
        Scanner sc = new Scanner(System.in);
        for(int i=0;i<5;i++) {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        }
    }
} Main public static void main(String[] args) throws Exception {       
        Scanner sc = new Scanner(System.in);
        for(int i=0;i<5;i++) {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        }
    } main {       
        Scanner sc = new Scanner(System.in);
        for(int i=0;i<5;i++) {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) for(int i=0;i<5;i++) {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        } int i=0; int i=0; i 0 i<5 i 5 i++ i++ i {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        } {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        } int k = sc.nextInt(); k sc.nextInt() sc.nextInt sc if (k==0) {
                System.out.println(i+1);
            } k==0 k 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) throws Exception {       
        Scanner sc = new Scanner(System.in);
        for(int i=0;i<5;i++) {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        }
    }
} public class Main {
    public static void main(String[] args) throws Exception {       
        Scanner sc = new Scanner(System.in);
        for(int i=0;i<5;i++) {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        }
    }
} Main
import java.util.*;
import java.io.*;
public class Main {
    public static void main(String[] args) throws Exception {       
        Scanner sc = new Scanner(System.in);
        for(int i=0;i<5;i++) {
            int k = sc.nextInt();
            if (k==0) {
                System.out.println(i+1);
            }
        }
    }
}
