#include <stdio.h>
#include <stdint.h>
uint8_t set_range(uint8_t reg, uint8_t start, uint8_t end) {
// Your code here
for(int i = start ; i <= end ; i++)
{
reg |= ((1 & 0x0F) << i);
}
return reg;
}
int main() {
uint8_t reg, start, end;
scanf("%hhu %hhu %hhu", ®, &start, &end);
printf("%u", set_range(reg, start, end));
return 0;
}