#include <iostream>

#include <cstring>

#include <vector>

using namespace std;

string LCS(string &s1, string &s2)

{

    int row = s1.size();

    int col = s2.size();

    string table[row + ][col + ];

    char rowChar[row + ];

    char colChar[col + ];

    int cnt = ;

    rowChar[] = colChar[] = '\0';

    for(int i = row - , cnt = ; i >= ; i--, cnt++)

    {

        rowChar[cnt] = s1[i];

    }

    for(int i = col - , cnt = ; i >= ; i--, cnt++)

    {

        colChar[cnt] = s2[i];

    }

    char ch1, ch2;

    string str1, str2;

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

    {

        for(int j = ; j <= col; j++)

        {

            ch1 = rowChar[i];

            ch2 = colChar[j];

            if(ch1 == ch2)

                table[i][j] = ch1 + table[i - ][j - ];

            else

            {

                str1 = table[i - ][j];

                str2 = table[i][j - ];

                if(str1.size() == str2.size())

                    table[i][j] = str1 < str2 ? str2 : str1;

                else

                    table[i][j] = str1.size() < str2.size() ? str2 : str1;

            }

        }

    }

    return table[row][col];

}

void showDiff(string &s1, string &s2, string sub, vector<string> &ret)

{

    cout << "Sub = " << sub << endl;

    int len1 = s1.size();

    int len2 = s1.size();

    for(int i = , j = ; i < len1; i++)

    {

        if(s1[i] != sub[j])

        {

            string str;

            str.push_back('-');

            str.push_back(s1[i]);

            ret.push_back(str);

        }

        else

            j++;

    }

    for(int i = , j = ; i < len2; i++)

    {

        if(s2[i] != sub[j])

        {

            string str;

            str.push_back('+');

            str.push_back(s2[i]);

            ret.push_back(str);

        }

        else

            j++;

    }

}

int main()

{

    string str1, str2;

    cin >> str1 >> str2;

    string retSub = LCS(str1, str2);

    vector<string> ret;

    showDiff(str1, str2, retSub, ret);

    vector<string>::iterator iter;

    for(iter = ret.begin(); iter != ret.end(); iter++)

        cout << *iter << endl;

    return ;

}