UVa - 10188 - Automated Judge Script

#include <iostream>
#include <algorithm>
#include <ctype.h>
using namespace std;
string soloNumeros(string cad)
{
    string sol = "";
    for(int i = 0; i < cad.size(); i++)
        if(isdigit(cad[i]))
            sol+=cad[i];
    return sol;
}
int main(int argc, char *argv[])
{
    int a,b;
    int nrocaso = 1;
    string linea;
    while(getline(cin,linea))
    {
        a = atoi(linea.data());
        if(a == 0)
            return 0;
        string cadsA="";
        for(int i = 0 ; i<a; i++)
        {
            getline(cin,linea);
            cadsA +=linea+'\n';
        }
        getline(cin,linea);
        b = atoi(linea.data());
        string cadsB="";
        for(int i = 0 ; i<b; i++)
        {
            getline(cin,linea);
            cadsB += linea+'\n';
        }
        cout<< "Run #"<<nrocaso<<": ";
        if(cadsA.compare(cadsB) == 0)
            cout << "Accepted"<<endl;
        else{
            string numsA,numsB;
            numsA = soloNumeros(cadsA);
            numsB = soloNumeros(cadsB);
            if(numsA.compare(numsB)==0)
                cout << "Presentation Error"<<endl;
            else
                cout<< "Wrong Answer"<<endl;
        }
        nrocaso++;
    }
    return 0;
}