5047 - Arbiter Login

#include <cstdio>
#include <algorithm>
#include <cstring>
#include <iostream>
#include <cstdlib>
#include <string>
#include <vector>
#define DEBUGG freopen("f:\\in.txt", "rt", stdin);freopen("f:\\out.txt", "wt, "stdout");
#define SF scanf
#define PF printf
#define TESTCASE int t;scanf("%d", &t);getchar();while(t--)
#define FOR(n) for(int i = 0; i < n; i++)
#define N 100000
using namespace std;

int main()
{
    //DEBUGG
    string main_str, comp_str;
    int tc = 1;

    int t;
    scanf("%d", &t);
    getchar();
    while(t--)
    {
        cin >> main_str >> comp_str;
        //cout << main_str << ' ' << comp_str << endl;
        PF("Case %d: ", tc++);

        int main_len = main_str.size();
        int comp_len = comp_str.size();

        if(comp_len > main_len)
        {
            //PF("
            PF("Wrong password.\n");
        }
        else if(main_len == comp_len)
        {
            if(main_str == comp_str) cout << "Login successful." << endl;
            else
            {
                bool flag = true;
                for(int i = 0; i < main_len; i++)
                {
                    if((tolower(main_str[i]) != tolower(comp_str[i])) ||
                            ((main_str[i] >= 'a' && main_str[i] <= 'z') && (comp_str[i] >= 'a' && comp_str[i] <= 'z')) ||
                            ((main_str[i] >= 'A' && main_str[i] <= 'Z') && (comp_str[i] >= 'A' && comp_str[i] <= 'Z')))
                    {
                        //cout << main_str[i] << ' ' << comp_str[i] << endl;
                        flag = false;
                        break;
                    }
                }
                if(flag) cout << "Wrong password. Please, check your caps lock key." << endl;
                else cout << "Wrong password." << endl;
            }
        }
        else
        {
            string temp;
            int k = 0;
//            string dummy1 = main_str, dummy2 = comp_str;
//            transform(dummy1.begin(),dummy1.end(),dummy1.begin(),::tolower);
//            transform(dummy2.begin(),dummy2.end(),dummy2.begin(),::tolower);
//
//            if(dummy1 != dummy2) cout << "Wrong password." << endl;
//            else
            //{
            for(int i = 0; i < main_len; i++)
            {
                if(main_str[i] != '0' && main_str[i] != '1'
                        && main_str[i] != '2' && main_str[i] != '3'
                        && main_str[i] != '4' && main_str[i] != '5'
                        && main_str[i] != '6' && main_str[i] != '7'
                        && main_str[i] != '8' && main_str[i] != '9'
                  )
                {
                    temp += main_str[i];
                    //cout << temp[k-1];
                }
            }
            int temp_len = temp.size();
            //temp[k] = '\0';
            //string temp2 = temp;
            //cout << comp_str << '~' << temp << endl;

            if(comp_str == temp) cout << "Wrong password. Please, check your num lock key." << endl;
            else if(temp_len == comp_len)
            {
                bool flag = true;
                for(int i = 0; i < temp_len; i++)
                {
                    if((tolower(temp[i]) != tolower(comp_str[i])) ||
                            ((temp[i] >= 'a' && temp[i] <= 'z') && (comp_str[i] >= 'a' && comp_str[i] <= 'z')) ||
                            ((temp[i] >= 'A' && temp[i] <= 'Z') && (comp_str[i] >= 'A' && comp_str[i] <= 'Z'))
                      )
                    {
                        flag = false;
                        break;
                    }
                }
                if(flag) cout << "Wrong password. Please, check your caps lock and num lock keys." << endl;
                else cout << "Wrong password." << endl;
            }
            else cout << "Wrong password." << endl;
            //}
        }
    }

    return 0;
}