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

#define CORRUPT_CHANCE 1

int main(int argc, char *argv[])
{
	char buf[4096];
	int res, x;
	
	srandom(time(NULL) + getpid());
	
	for (;;) {
		if ((res = read(0, buf, sizeof(buf))) <= 0)
			return 0;
		for (x = 0; x < res; x++) {
			if (random() % 10000 < CORRUPT_CHANCE)
				buf[x] ^= (1 << random() % 8);
		}
		write(1, buf, res);
	}
	return 0;
}