LA 5047

#include<bits/stdc++.h>
#include<string>
using namespace std;
int main()
{
    string str1,str2,str3,str4,str5;
    int n;
    freopen("input.txt","r",stdin);
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>str1>>str2;
        cout<<"Case "<<i<<": ";
        if(str1==str2)
            cout<<"Login successful."<<endl;

        else{
            cout<<"Wrong password.";
            str3=str1;
            str4=str1;
            str5=str1;
            int j=0;
            while(j<str1.size()){
                if(str5[j]>='a' && str5[j]<='z')
                    str5[j]=(str5[j]-'a')+'A';

                else if(str5[j]>='A' && str5[j]<='Z')
                    str5[j]=(str5[j]-'A')+'a';

                    j++;
            }
            j=0;
            while(j<str3.size()){
                if(str3[j]>='0' && str3[j]<='9'){
                    str3.erase(str3.begin()+j);
                    str4.erase(str4.begin()+j);
                }
                else{
                    if(str4[j]>='a' && str4[j]<='z')
                        str4[j]=(str4[j]-'a')+'A';

                    else if(str4[j]>='A' && str4[j]<='Z')
                        str4[j]=(str4[j]-'A')+'a';

                    j++;
                }
            }
            if(str5==str2)
                cout<<" Please, check your caps lock key.";
            else if(str3==str2)
                cout<<" Please, check your num lock key.";
            else if(str4==str2)
                cout<<" Please, check your caps lock and num lock keys.";

            cout<<endl;
        }
    }
    return 0;

}