#include<fstream>
#include<string>
using namespace std;

#define dimMAX 2000002;
#define p 73;
#define mod1 1000007;
#define mod2 1000021;
int match[2000002];
int main(){
    string A,B;
    ifstream inFile("strmatch.in");
    getline(inFile,A);
    getline(inFile,B);
    int a,b;
    a=A.size()-1;
    b=B.size()-1;
    ofstream outFile;
    outFile.open("strmatch.out");
    long long hashA=0;
    long long hashB=0;
    for(int i=0;i<=a;i++){
        hashA=31*hashA+A[i];
        hashB=31*hashB+B[i];
    }
    int nr=0;
    if(hashA==hashB){
            nr++;
            match[nr]=0;
    }

    for(int i=1;i<=b-a;i++){
        hashB=0;
        for(int j=i;j<=i+a;j++) hashB=31*hashB+B[j];
        if(hashB==hashA){
            nr++;
            match[nr]=i;
        }
    }
    outFile<<nr<<"\n";
    if(nr>1000) nr=1000;
    for(int i=1;i<=nr;i++) outFile<<match[i]<<" ";

}