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

public class Main{

static BufferedReader s1;
static BufferedWriter out;
static String read() throws IOException{String line="";while(line.length()==0){line=s1.readLine();continue;}return line;}
static int int_v (String s1){return Integer.parseInt(s1);}
static long long_v(String s1){return Long.parseLong(s1);}
static int[] int_arr() throws IOException{String[] a=read().split("\\s+");int[] b=new int[a.length];for(int i=0;i<a.length;i++){b[i]=int_v(a[i]);}return b;}
static long[] long_arr() throws IOException{String[] a=read().split("\\s+");long[] b=new long[a.length];for(int i=0;i<a.length;i++){b[i]=long_v(a[i]);}return b;}
static void assign(){s1=new BufferedReader(new InputStreamReader(System.in));out=new BufferedWriter(new OutputStreamWriter(System.out));}
static long Modpow(long a,long p,long m){long res=1;while(p>0){if((p&1)!=0){res=(res*a)%m;}p >>=1;a=(a*a)%m;}return res;}
//......................................@uthor_Alx..............................................
static long mod=(long)1e9+7;

public static void main(String[] args) throws  IOException{
                assign();
                String s=read(),t=read();
                int n=s.length(),m=t.length();
                int[][] dp=new int[n+1][m+1];
                int res=m;
                for(int i=1;i<=n;i++){
                    if(i+m-1>n) continue;
                    int tmp=0;
                    for(int j=i;j<i+m;j++){
                        char c1=s.charAt(j-1),c2=t.charAt(j-i);
                        if(c1!=c2) tmp++;
                    }
                    res=Math.min(res,tmp);
                }
                out.write(res+"");
                out.flush();

    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz