137b.cpp

#include <iostream>
#include <cstdlib>
using namespace std;

int data[5001];


int main(){
    for (int i = 0; i < 5001; i++) data[i] = 0;
    int buf;

    cin >> buf;
    int foo = buf;
    int c = buf;
    while (c){
	cin >> foo;
	data[foo] += 1;
	c--;
    }

    int counter = 0;

    while (buf  >= 1){
	if (data[buf] == 0) counter++;
	buf--;
    }
    
    cout << counter << endl;
}