#include<stdio.h>
int main() {
    int  n,i,j,k,count;
    printf("enter the size of the array (n):");
    scanf("%d", &n);
    if(n<0 || n> 0)  {
        printf("Invalid input\n");
        return 0;
    }
    int arr;
    int unique_elements[10];
    int unique_count[0];
    printf("enter %d integers:",n);
    for(i=0;i<n;i++) {
        scanf("%d", &arr[i]);
    }
     for(i=0;i<n;i++) {
         count=0
         for(j=0;j<n;j++) {
             if(i!=j && arr[i] ==arr[j]) {
                 count++;
                 break;
             }
         }
         if(count==0) {
             int is_unique=1;
             for(k=0;k<unique_count;k++) {
                 if(arr[i]==unique_elements[k]) {
                     is_unique=0;
                     break;
                 }
             }
             if(is_unique) {
                 unique_elements[unique_count++]=arr[i];
                 
             } 
         }
     }
     printf("unique elements:");
     for((i=0;i<unique_count;i++) {
         printf("%d",unique_elements[i]);
     }
     printf("\n";)
     return 0;
}