import java.io.*;
import java.util.*;


class Main {
    public static void main(String[] args) {
        MyScanner sc = new MyScanner();
        out = new PrintWriter(new BufferedOutputStream(System.out));
        String ns=sc.next();
        int m=ns.length();
        int[]a=new int[m+1];
        for(int i=1;i<=m;++i){
            a[i]=ns.charAt(i-1)-'0';
        }
        long[][]dp=new long[2][m+1];
        dp[0][0]=0;
        dp[1][0]=1;
        for(int i=0;i<m;++i){
            for(int b=0;b<2;++b){
                int w=a[i+1]+b;
                long ma=1L<<48;
                for(int j=0;j<10;++j){
                    int x=(j+w)/10;
                    int y=(j+w)%10;
                    int z=y%5;
                    y/=5;
                    int u=j/5;
                    int v=j%5;
                    ma=Math.min(ma,dp[x][i]+y+z+u+v);
                }
                dp[b][i+1]=ma;
            }
        }
        out.println(dp[0][m]);
        out.close();
    }
    // http://codeforces.com/blog/entry/7018
    //-----------PrintWriter for faster output---------------------------------
    public static PrintWriter out;
    //-----------MyScanner class for faster input----------
    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;
        public MyScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }
        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
        int nextInt() {
            return Integer.parseInt(next());
        }
        long nextLong() {
            return Long.parseLong(next());
        }
        double nextDouble() {
            return Double.parseDouble(next());
        }
        String nextLine(){
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
        int[] nextIntArray(int n){
            int[]r=new int[n];
            for(int i=0;i<n;++i)r[i]=nextInt();
            return r;
        }
    }
}