import java.util.*;

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

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int ans = 1;
        for (int i = 0; i < 5; i++) {
            int x = sc.nextInt();
            if (x == 0) {
                ans += i;
            }
        }
        System.out.println(ans);
    }
}