#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main(){
    string s1,s2;
    bool flag;
    cin >> s1;
    do{
        cin >> s2;
        if(s1==s2)  flag = true;  
        else flag = false;
        cout << "locked\n";
    }while(!flag);
    cout << "unlocked\n";
}