#include<iostream>
#include<fstream>
using namespace std;
int main() {
int v[101] = {0}, x, sem = 1;
ifstream f("intrare.txt");
while (f >> x)
v[x] = 1;
f.close();
for (int i = 1; i <= 100; i++)
if (v[i] == 0) {
cout << i << ' ';
sem = 0;
}
if (sem == 1)
cout << "NU LIPSESTE NICIUN NUMAR";
return 0;
}