#include <stdio.h>
#include <stdint.h>
uint32_t extract_even_bits(uint32_t reg) {
// Your code here
uint32_t extracted_data = 0;
for(int i=0;i<16;i++){
uint8_t bit = ((reg >> (i*2))&1);
extracted_data = extracted_data | (bit << i);
}
return extracted_data;
}
int main() {
uint32_t reg;
scanf("%u", ®);
printf("%u", extract_even_bits(reg));
return 0;
}