#include <stdio.h>
#include <stdint.h>
uint8_t set_range(uint8_t reg, uint8_t start, uint8_t end) {
// Your code here
int i = 0;
for (i = start; i <= end; i++)
{
reg &= ~(1 << i);
reg |= ( 1<< i);
}
// reg &= ~(0x07 << start);
//reg |= ( 0x07 << start);
return reg;
}
int main() {
uint8_t reg, start, end;
scanf("%hhu %hhu %hhu", ®, &start, &end);
printf("%u", set_range(reg, start, end));
return 0;
}