Bittijono

input/code.cpp: In function 'int main(int, char**)':
input/code.cpp:19:16: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'uint64_t* {aka long unsigned int*}' [-Wformat=]
  scanf("%d", &k);
                ^
input/code.cpp:19:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &k);
                 ^

#include <stdio.h>
#include <stdint.h>
#include <math.h>

uint8_t get_bit(uint64_t k) {
	if (k == 1)
		return 0;

	uint64_t n = 2;
	while (n < k) {
		n *= 2;
	}

	return !get_bit(k - n / 2);
}

int main(int argc, char *argv[]) {
	uint64_t k;
	scanf("%d", &k);

	printf("%d\n", get_bit(k));

	return 0;
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 2

Verdict: WRONG ANSWER

Test 3

Group: 3

Verdict: WRONG ANSWER