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

int main() {
    int n;
    scanf("%d", &n);
    int k;
    int max_k = 0;
    char result[100] = {0};
    for (int i = 0; i < n; ++i) {
        k = 0;
        char s[100] = {0};
        scanf("%s", s);
        while (s[++k]);
        if (k > max_k) {
            max_k = k;
            strcpy(result, s);
        }
    }
    printf("%s\n", result);
    return 0;
}