Please somebody help me. I can not find the reason not to be accepted my code.

#include <iostream>
#include <string>
#include <vector>
using namespace std;
bool found;
string convert(string str)
{
    string char_list = "22233344115566070778889990";
    string to_digit;
    for(int i=0; i<str.length(); i++)
    {
        to_digit += char_list[str[i]-97];
    }
    return to_digit;
}
void dfs(vector<int> index[], vector<int> ends[], string diction[], vector<int> track, int i, int n)
{
    if(found == true)
    {
        return;
    }
    if(i == n){
        for(int j=0; j<track.size(); j++)
        {
            cout<<diction[track[j]]<<" ";
        }
        found = true;
        return;
    }
    for(int k=0; k<ends[i].size(); k++){
        track.push_back(index[i][k]);
        dfs(index, ends, diction, track, ends[i][k], n);
        track.pop_back();
    }
}
int main()
{
    for(; ;){
        found = false;
        string number;
        cin>>number;
        if(number == "-1"){
            break;
        }
        int dic_size;
        cin>>dic_size;
        string diction[dic_size];
        for(int i=0; i<dic_size; i++){
            cin>>diction[i];
        }
        int n = number.size();
        vector<int> ends[n];
        vector<int> index[n];
        for(int j=0; j<dic_size; j++)
        {
            string str = convert(diction[j]);
            int len = diction[j].size();
            for(int i=0; i<n; i++)
            {
                if(number.substr(i,len) == str){
                    ends[i].push_back(i+len);
                    index[i].push_back(j);
                }
            }
        }
        vector<int> track;
        dfs(index, ends, diction, track, 0, n);
        if(found == false){
            cout<<"No solution.";
        }
    }
    return 0;
}

Edited by author 03.01.2017 20:24

Have you tried to compile it?

cin>>dic_size;
string diction[dic_size];

vector<int> ends[n];
ends[i].push_back(i+len);

It would be great if you post link to ideone.com (for example) run.
Run should contain expected task example output.

Edited by author 03.01.2017 21:35