#include<bits/stdc++.h>
using namespace std;
const int N=1000010;
int ne[N];
char s1[N],s2[N];
int main()
{
	cin>>s1+1>>s2+1;
	int l1=strlen(s1+1);
	int l2=strlen(s2+1);
	for(int i=2,j=0;i<=l2;i++)
	{
		while(j&&s2[i]!=s2[j+1])j=ne[j];
		if(s2[i]==s2[j+1])j++;
		ne[i]=j;
	}
	for(int i=1,j=0;i<=l1;i++)
	{
		while(j&&s2[j+1]!=s1[i])j=ne[j];
		if(s1[i]=s2[j+1])j++;
		if(j==l2)
		{
			cout<<i-l2+1;
			cout<<endl;
			j=ne[j];
		}
	}

	for(int i=1;i<=l2;i++)
	{
		cout<<ne[i]<<' ';
	}
	return 0;
}