#include<bits/stdc++.h>

 using namespace std;

 const int maxn=1e6+;

 int kmp[maxn];

 char a[maxn],b[maxn];

 int main()

 {

     scanf("%s%s",a+,b+);

     int lena=strlen(a+);

     int lenb=strlen(b+);

     int index=;

     for(int i=;i<=lenb;i++){

         while(index&&b[i]!=b[index+])

             index=kmp[index];

         if(b[index+]==b[i]) index++;

         kmp[i]=index;

     }

     index=;

     for(int i=;i<=lena;i++){

         while(index>&&b[index+]!=a[i])

             index=kmp[index];

         if(b[index+]==a[i])

            index++;

         if(index==lenb) {cout<<i-lenb+<<endl;index=kmp[index];}

     }

     for(int i=;i<=lenb;i++)

         printf("%d ",kmp[i]);

     printf("\n");

 }