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

void f(char* buf) {

    fgets(buf, 100, stdin);
}

int main(int argc, char* argv[])
{
    int critical_variable = 0;
    char local_buffer[32];
    f(local_buffer);

    if (critical_variable == 1337) {
        printf("Oh dear, you shouldn't be here!\n");
        system("/bin/sh");
    }
    
    return 0;
}