Leimasin

import java.util.Scanner;
public class main {

    public static void main(String[] args) {



        Scanner reader = new Scanner(System.in);

        char[] a = reader.nextLine().toCharArray();
        char[] b = reader.nextLine().toCharArray();
        int [] lista = new int[a.length*8];
        int stamp=0;
        int q;
        int i;
        int d;
        int c;
        int ab;
        int ln;
        boolean bool;
        boolean morebool;


        q=0;
        lista[0]=b.length;
        stamp++;
        if(a[0] != b[0] || a[a.length-1] != b[b.length-1]){
            System.out.println("-1");
            System.exit(0);
        }

        while(q <= a.length-b.length){

            if(a[q] == b[0]){
                i=0;
                while(i<b.length && a[q+i]==b[i]){
                    i++;
                }
                if(i == b.length){
                    lista[stamp]=q;
                    stamp++;
                    i=0;
                    while(i<b.length){
                        a[q+i]='.';
                        i++;
                    }
                }
            }
            q++;
        }



        int or = stamp-1;
        d=stamp-1;

        while(d > 0){
            q=lista[d];
            while(q >= lista[d-1]){
                c=0;
                ln = 0;
                while(c < b.length && q-c>-1){
                    bool=true;
                    morebool=false;
                    ab=0;
                    while(ab <= c){
                        if(a[q-ab] != b[c-ab] && a[q-ab]!='.'){
                            bool=false;

                        }
                        if(a[q-ab]!= '.'){
                            morebool=true;
                        }
                        ab++;
                    }
                    if(bool&&c!=0&& morebool){
                        ln=c;
                    }
                    c++;
                }
                ab=0;
                if(ln!=0){
                    lista[stamp] = q-ln;
                    stamp++;
                }
                while(ab < b.length && ln != 0){
                    a[q-ab]='.';
                    ab++;
                }
                q--;
            }
            d--;
        }

            while(q <= a.length-b.length){
                c=0;
                ln = 0;
                while(c <= b.length&& q+b.length+c <= a.length){
                    bool=true;
                    morebool=false;
                    ab=0;
                    while(ab < b.length){
                        if(a[q+ab+c] != b[ab] && a[q+ab+c]!='.'){
                            bool=false;
                        }
                        if(a[q+ab+c]!='.'){
                            morebool=true;
                        }
                        ab++;
                    }
                    if(morebool&& bool){
                        ln=c;
                    }
                    c++;
                }
                ab=0;
                if(ln!=0){
                    lista[stamp] = q+ln;
                    stamp++;
                }
                while(ab < b.length && ln != 0){
                    a[q+ab+ln]='.';
                    ab++;
                }
                q++;
            }

        i=0;
        while(i<a.length){
            if(a[i]!='.'){
                System.out.println("-1");
                System.exit(1);
            }
            i++;
        }
        System.out.println(stamp);
        while(stamp > 0 ){
            System.out.println(lista[stamp]+1);
            stamp--;
        }
    }
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 1

Verdict: ACCEPTED

Test 7

Group: 1

Verdict: ACCEPTED

Test 8

Group: 1

Verdict: RUNTIME ERROR

Test 9

Group: 1

Verdict: ACCEPTED

Test 10

Group: 1

Verdict: ACCEPTED

Test 11

Group: 1

Verdict: RUNTIME ERROR

Test 12

Group: 1

Verdict: RUNTIME ERROR

Test 13

Group: 1

Verdict: ACCEPTED

Test 14

Group: 1

Verdict: ACCEPTED

Test 15

Group: 2

Verdict: ACCEPTED

Test 16

Group: 2

Verdict: ACCEPTED

Test 17

Group: 2

Verdict: ACCEPTED

Test 18

Group: 2

Verdict: RUNTIME ERROR

Test 19

Group: 2

Verdict: ACCEPTED

Test 20

Group: 2

Verdict: ACCEPTED

Test 21

Group: 2

Verdict: RUNTIME ERROR

Test 22

Group: 2

Verdict: ACCEPTED

Test 23

Group: 2

Verdict: RUNTIME ERROR

Test 24

Group: 2

Verdict: ACCEPTED

Test 25

Group: 2

Verdict: RUNTIME ERROR

Test 26

Group: 2

Verdict: RUNTIME ERROR

Test 27

Group: 2

Verdict: ACCEPTED

Test 28

Group: 2

Verdict: ACCEPTED

Test 29

Group: 3

Verdict: ACCEPTED

Test 30

Group: 3

Verdict: RUNTIME ERROR

Test 31

Group: 3

Verdict: WRONG ANSWER

Test 32

Group: 3

Verdict: ACCEPTED

Test 33

Group: 3

Verdict: ACCEPTED

Test 34

Group: 3

Verdict: ACCEPTED

Test 35

Group: 3

Verdict: RUNTIME ERROR

Test 36

Group: 3

Verdict: ACCEPTED

Test 37

Group: 3

Verdict: RUNTIME ERROR

Test 38

Group: 3

Verdict: ACCEPTED

Test 39

Group: 3

Verdict: RUNTIME ERROR

Test 40

Group: 3

Verdict: WRONG ANSWER

Test 41

Group: 3

Verdict: ACCEPTED

Test 42

Group: 3

Verdict: ACCEPTED