#include <stdio.h>
void findIntersection(int *arr1, int n, int *arr2,int m) {
    int found = 0;
    if (n <= 0 || m <= 0) {
        printf("Invalid Input");
        return;
    }
    for (int i = 0; i < n;i++) {
        for (int j = 0; j < m; j++) {
            for (int j = 0; j < m; j++) {
                if (*(arr1 + i) ==*(arr2 + j)) {
                    printf("%d", *(arr1 + i));
                    found = 1;
                }
            }
        }
        if (!found) {
            printf("No common elements");
        }
    }
    int main() {
        int n,m;
        scanf("%d", &n);
        int arr1[n];
        for (int i = 0; i < n; i++)
        scanf("%d", &n);
        int arr2[m];
        for (int i =0; i < m;i++)
        scanf("%d", &arr2[i]);
        findIntersection(arr1, n, arr2,m);
        return 0;
    }
}