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

void hacked() {
    system("cat flag.txt");
    fflush(stdout);
}

void return_input() {
    char array[30];
    read(0, array, 100);
    printf("You entered: %s\n", array);
}

int main() {
    setbuf(stdout, NULL);
    setbuf(stderr, NULL);
    setbuf(stdin, NULL);
    return_input();
    return 0;
}