#include <stdio.h>

int main() {
    int n;
    scanf("%d", &n);
    
    if (n < 0) {
        printf ("Invalid input");
        return 0;
    }
    
    int arr[100];
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n;) {
            if (arr[i] == arr[j]) {
                
                for (int k = j; k < n - 1; k++){
                    arr[k] = arr[k + 1];
                }
                n--;
            } else {
                j++;
            }
        }
    }
    
    for (int)
}