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#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
int main(int argc, char *argv[]) {
char buf[1024];
ssize_t i;
if ((i = read(0, buf, sizeof(buf) - 1)) < 24) return 0;
buf[i] = 0;
if (buf[0] != 'A') return 0;
if (buf[1] != 'B') return 0;
if (buf[2] != 'C') return 0;
if (buf[3] != 'D') return 0;
if (memcmp(buf + 4, "1234", 4) || memcmp(buf + 8, "EFGH", 4)) return 0;
if (strncmp(buf + 12, "IJKL", 4) == 0 && strcmp(buf + 16, "DEADBEEF") == 0)
abort();
return 0;
}
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