piwo tul

#include <bits/stdc++.h>

using namespace std;

int main(){
    int n;
    cin>>n;
    int t[20000] = {0};

    for(int i = 0; i < n; i++){
        cin >> t[i];
        t[i]--;
    }

    int types[15000] = {0};

    for(int i = 0; i < n; i++){
        types[t[i]] = 1;
    }

    int missingTypes = 15000;

    for(int i = 0; i < 15000; i++){
        if(types[i] == 1){
            missingTypes--;
        }
    }

    cout << missingTypes << endl;

    return 0;
}