easy queue

#include <bits/stdc++.h>
#define optimizar_io ios_base::sync_with_stdio(0);cin.tie(0);

using namespace std;

queue <int> fila;
int main(){
    int num;
    cin >> num;
    while(num--){
        int value;
        cin >> value;
        switch(value){
            case 1:
                int v;
                cin >> v;
                fila.push(v);
                break;
            case 2:
                if(!fila.empty()) fila.pop();
                break;
            case 3:
                if(fila.empty()) cout << "Empty!" << endl;
                else cout << fila.front() << endl;
                break;
        }
    }
    return 0;

}