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

/* бля какой же код охуенный */
/* ломается, если x = 0x8000000000000000 */
char* tobin(long int x) {
	size_t i = 0, j = 0;
	char buffer[64];
	char *ret;
	char sgn = x < 0;

	x *= ((x > 0) << 1) - 1;
	for (; x; x >>= 1) buffer[i++] = '0' + (x & 1);
	ret = calloc(i + 1 + sgn, sizeof *ret);
	ret[0] = '-';
	j += sgn;
	while (i) ret[j++] = buffer[--i];

	return ret;
}

int main(int argc, char* argv[]) {
	long number;
	char *bin;

	if (argc != 2) {
		fprintf(stderr, "\x1b[91mError: Invalid amount of arguments\x1b[0m\n"
				"Usage: \x1b[92m%s <number>\n\x1b[0m", argv[0]);
		return 1;
	}

	number = atol(argv[1]);
	if (number == 0) {
		puts("Binary for 0: 0");
		return 0;
	}
	if (number == 0x8000000000000000) {
		puts("Aha, I see what you did there)");
		return 1;
	} 
	bin = tobin(number);
	printf("Binary for %li: %s\n", number, bin);
	free(bin);
	return 0;
}