#include <avr/io.h>    			

int main(void) 
{	
	DDRB = DDRB & 0b11011111;		
	DDRC = DDRB | 0b10000000;		
	
	while (1)
	{
		if(PINB & 0b00100000)
			PORTC = PORTC | 0b10000000;		
		else
			PORTC = PORTC & 0b01111111;	
	}
	
	return 0;
}