import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x[] = new int[5];
		int count =0;

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

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

		for(int i=0;i<5;i++) {
			x[i]=sc.nextInt();
		}
		for(int i=0;i<5;i++) {
			count +=1;
			if(x[i]==0) {
				break;
			}
		}
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		int x[] = new int[5];
		int count =0;

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

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

		for(int i=0;i<5;i++) {
			x[i]=sc.nextInt();
		}
		for(int i=0;i<5;i++) {
			count +=1;
			if(x[i]==0) {
				break;
			}
		}
		System.out.println(count);
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x[] = new int[5];
		int count =0;

		for(int i=0;i<5;i++) {
			x[i]=sc.nextInt();
		}
		for(int i=0;i<5;i++) {
			count +=1;
			if(x[i]==0) {
				break;
			}
		}
		System.out.println(count);
	}
}