#include <iostream>
#include <string>

using namespace std;

char find_char(string s, int index, char ch, string res)
{
    for(int i = 0; i < index; i++)
    {
        if(s[i] == ch)
        {
            return res[i];
        }
    }
    return (++res[res.size() - 1]);
}

bool isMatched(string s1, string s2)
{
    if(s1.size() != s2.size())
    {
        return false;
    }
    string res1, res2;
    res1.push_back('0');
    for(int i = 1; i < s1.size(); i++)
    {
        res1.push_back(find_char(s1, i, s1[i], res1));
    }
    res2.push_back('0');
    for(int i = 1; i < s2.size(); i++)
    {
        res2.push_back(find_char(s2, i, s2[i], res2));
    }
    if(res1 == res2)
    {
        return true;
    }
    else
    {
        return false;
    }
}

int main(int argc, const char * argv[])
{
    // insert code here...
    cout << isMatched("aba", "abb") << endl;
    return 0;
}