#include <stdio.h>
#include <stdint.h>
uint8_t extract_field(uint16_t reg) {
// Your logic here
int mask=0,mask1=0;
mask=reg | mask;
mask=mask>>4;
mask1=(1<<5)-1;
mask=mask & mask1;
return mask;
}
int main() {
uint16_t reg;
scanf("%hx", ®);
printf("%u", extract_field(reg));
return 0;
}