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

int main(int argc, char **argv){
 uint64_t upper_4 = ((1LLU<<4)-1)<<60;
 uint64_t lower_60 = ((1LLU<<60)-1);
 uint64_t number = (0x1LLU << 63) - 1 | (0x1LLU << 63);
 printf("%Lx\n", number & upper_4 >>60);
 printf("%Lx\n", number & lower_60);
}