#include <stdio.h>
#include <string.h>

int main() {
    int n;
    scanf("%d", &n);

    char fruits[n][20];
    for (int i = 0; i < n; i++) {
        scanf("%s", fruits[i]);
    }

    char search[20];
    scanf("%s", search);

    // Check if frui
    int found = 0;
    for (int i = 0; i < n; i++) {
        if (strcmp(fruits[i], search) == 0) {
            found = 1;
            break;
        }
    }

    if (found) {
        for (int i = 0; i < n; i++) {
            printf("%s", fruits[i]);
            if (i < n -1) printf ("");
        }
    }else{
        printf("fruit not found !");
    }
    return 0;
}