#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(void) {
unsigned char buf[8192];
int len;
fprintf(stdout, "---BEGIN DATA CONTENTS---\n");
while (1) {
len = fread(buf, 1, sizeof(buf), stdin);
if (len <= 0) {
break;
}
fwrite(buf, len, 1, stdout);
}
fprintf(stdout, "---END DATA CONTENTS---\n");
return 0;
}