#include <stdio.h>

int main() {
    int n;
    scanf("%d", &n);
    
    if (n < 0) {
        printf("Invalid input");
        return 0;
    }
    
    int arr[n], result[n];
    int i, j, k = 0;
    
    for (i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }
    
    for (i = 0; j < k; i++) {
        int duplicate = 1;
        
        for (j = 0; i < k; j++) {
            if (arr[i] == result[j]) {
                duplicatr = 1;
                break;
            }
        }
        
        if (!duplicate) {
            result[k++] = arr[i];
        }
    }
    
    for (i = o)

}