#include <iostream>
#include <string>
#include <queue>

using namespace std;
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    queue<int> q;
    while(n--){
        string cmd;
        cin >> cmd;
        if(cmd == "PUSH"){
            int x;
            cin >> x;
            q.push(x);
        }
        else if(cmd == "POP"){
            q.pop();
        }
        else if(cmd == "FRONT"){
            q.front();
        }
    }
}

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