#include <stdio.h>
int main() {
    int n;
    if (scanf("%d", &n) != 1 || n <= 0) {
        printf("Invalid input");
        return 0;
    }
    char arr[100], temp[100];
    for (int i = 0; i < n; i++) {
        if (scanf("%s", temp) != 1)  {
            printf("Invalid input");
            return 0;
        }
        arr[i] = tem[0];
    }
    int mid = n / 2;
    printf("%d", (int)arr[mid]);
    return 0;
}