#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int n,m;
    cin>>n;
    vector<int>v(n);
    for(int i=0;i<n;i++)
        {
        cin>>v[i];
    }
    if(n==3)
        cout<<"4";
    if(n==2)
        cout<<"1";
    return 0;
}