class Solution {
public:
    vector<string> findAndReplacePattern(vector<string>& words, string pattern) {
        int flag=0;
        int x;
        string number="0";
        for(int i=1;i<pattern.size();i++){
            for(int k=0;k<i;k++){
                if(pattern[i]==pattern[k]){
                    flag=1;
                    x=number[k]-'0';
                    number += to_string(x);
                }
            }
            if(flag==0){
                x=number[i-1]-'0';
                x++;
                number+=to_string(x);
            }
        }
        for(int j=0;j<words.size();j++){
            flag=0;
            string num2 = "0";
            for(int i=1;i<words[j].size();i++){
                for(int k=0;k<i;k++){
                    if(words[j][i]==words[j][k]){
                        flag=1;
                        x=num2[k]-'0';
                        num2 += to_string(x);
                    }
                }
                if(flag==0){
                    x=num2[i-1]-'0';
                    x++;
                    num2+=to_string(x);
                }
            }
            if(number!=num2){
                words.erase(words.begin()+j);
                j--;
            }
        }
        return words;
    }
};