Problem: George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (record |b| denotes the current length of the array). Then one change is a sequence of actions: 

  * Choose two distinct indexes i and j (1 ≤ i, j ≤ |b|; i ≠ j), such that bi ≥ bj. 
  * Get number v = concat(bi, bj), where concat(x, y) is a number obtained by adding number y to the end of the decimal record of number x. For example, concat(500, 10) = 50010, concat(2, 2) = 22. 
  * Add number v to the end of the array. The length of the array will increase by one. 
  * Remove from the array numbers with indexes i and j. The length of the array will decrease by two, and elements of the array will become re-numbered from 1 to current length of the array. 



George played for a long time with his array b and received from array b an array consisting of exactly one number p. Now George wants to know: what is the maximum number of elements array b could contain originally? Help him find this number. Note that originally the array could contain only positive integers.

Input

The first line of the input contains a single integer p (1 ≤ p < 10100000). It is guaranteed that number p doesn't contain any leading zeroes.

Output

Print an integer — the maximum number of elements array b could contain originally.

Examples

Input

9555


Output

4

Input

10000000005


Output

2

Input

800101


Output

3

Input

45


Output

1

Input

1000000000000001223300003342220044555


Output

17

Input

19992000


Output

1

Input

310200


Output

2

Note

Let's consider the test examples: 

  * Originally array b can be equal to {5, 9, 5, 5}. The sequence of George's changes could have been: {5, 9, 5, 5} → {5, 5, 95} → {95, 55} → {9555}. 
  * Originally array b could be equal to {1000000000, 5}. Please note that the array b cannot contain zeros. 
  * Originally array b could be equal to {800, 10, 1}. 
  * Originally array b could be equal to {45}. It cannot be equal to {4, 5}, because George can get only array {54} from this array in one operation. 



Note that the numbers can be very large.

Solution (in JAVA):

Solution:
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.BufferedWriter;
import java.util.InputMismatchException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.math.BigInteger;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 * @author Ziklon
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        TaskC solver = new TaskC();
        solver.solve(1, in, out);
        out.close();
    }
}

class TaskC {

    char b[];
    char c[];

    boolean isMinor(int to, int add) {
        int res = to + 1 - add;
        if (res > add) return true;
        if (add > res) return false;

        for (int i = 0; i < add; i++) {
            if (b[i] > c[add - i - 1]) return true;
            if (b[i] < c[add - i - 1]) return false;
        }
        return true;
    }

    long count(int to) {
        if (to < 0) return 0;
        long ans = 0;
        while (to >= 0) {
            int addTo = 0;
            for (int i = to; i >= 0; i--) {
                c[addTo] = b[i];
                addTo++;
                if (b[i] != '0') break;
            }
            if (isMinor(to, addTo)) {
                ans = ans + 1;
                to = to - addTo;
            }else{
                ans++;
                break;
            }
        }
        return ans;

    }

    public void solve(int testNumber, InputReader in, OutputWriter out) {
        long ans = 0;
        b = in.nextString().toCharArray();
        //System.out.println(b.length);
        c = new char[b.length];
        ans = count(b.length - 1);
        out.println(ans);
    }
}

class InputReader {
    InputStream stream;
    byte[] buf = new byte[1024];
    int curChar, numChars;

    public InputReader(InputStream stream) {
        this.stream = stream;
    }

    private int read() {
        if (numChars == -1)
            throw new InputMismatchException();
        if (curChar >= numChars) {
            curChar = 0;
            try {
                numChars = stream.read(buf);
            } catch (IOException e) {
                throw new InputMismatchException();
            }
            if (numChars <= 0)
                return -1;
        }
        return buf[curChar++];
    }

    public String nextString() {
        int c = read();
        while (isSpaceChar(c))
            c = read();
        StringBuffer res = new StringBuffer();
        do {
            res.appendCodePoint(c);
            c = read();
        } while (!isSpaceChar(c));
        return res.toString();
    }

    private boolean isSpaceChar(int c) {
        return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
    }

    }

class OutputWriter {

    private final PrintWriter writer;

    public OutputWriter(OutputStream outputStream) {
        writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
    }

    public OutputWriter(Writer writer) {
        this.writer = new PrintWriter(writer);
    }

    public void print(Object... objects) {
        for (int i = 0; i < objects.length; i++) {
            if (i != 0)
                writer.print(' ');
            writer.print(objects[i]);
        }
    }


    public void println(Object... objects) {
        print(objects);
        writer.println();
    }

    public void close() {
        writer.close();
    }

    }