C :

#include <stdio.h>
int main(){
	int i;
	unsigned int a;
//	freopen("1.txt","r",stdin);
	while (scanf("%u",&a)==1)
	{
		printf("%u\n",(a&(1<<7|1<<4|1<<5|1<<6))>>4);
	}
//	fclose(stdin);
	return 0;
}

C++ :

#include <stdio.h>
int main() {
	int n;
	scanf("%d", &n);
	printf("%d\n", (n >> 4) & ((1 << 4) - 1));
	return 0;
}