#include <iostream>
#include <fstream>
#include <string>

using namespace std;

#define dim 2000000

void tabla(int[],string);
int srch(int,string,string,int[]);

int main()
{
	fstream in("strmatch.in", ios::in);
	fstream out("strmatch.out", ios::out);

	int *t;
	t=new int[dim];

	string cuv,str,rand="";
	in>>cuv;
	in>>str;


	
        
        int i=0,suma=0;
        
       
            
        
        
        tabla(t,cuv);
        
        do{
                i= srch(i,str,cuv,t);
                if(i < str.length())
                {
                    rand= rand + to_string(static_cast<long long>(i))+ " ";
                    suma++;
                }
                i++;
                
        
        }while(i < str.length());
        
        
        out<<suma<<"\n";
		out<<rand;
        
        in.close();
        out.close();
	




	return 0;
}

	void tabla(int t[],string cuv){
        
        int pos=2,cnd=0;
        
        t[0]=-1;
        t[1]=0;
        
        while( pos < cuv.length() )
            if(cuv[pos-1] == cuv[cnd])
            {
                cnd++;
                t[pos]=cnd;
                pos++;
            }
            else if( cnd > 0 )
            {
                cnd=t[cnd];
            }
            else
            {
                t[pos]=0;
                pos++;
            }
        
    }
    
    int srch(int m,string str,string cuv,int t[])
	{
        
        int i=0;
        
        while( (m+i) < str.length() )
            if(str[m+i] == cuv[i])
            {
                if(i == cuv.length()-1)
                    return m;
                i++;
            }
            else
                if(t[i]>-1)
                {
                    m= m+i-t[i];
                    i= t[i];
                }
                else
                {
                    m= m+1;
                    i= 0;
                }
        return str.length();
    }