int main(void)
{
		//setare pini pt semafoare ca output
		DDRB |= (1 << PB0);
		PORTB &= ~(1 << PB0);
		DDRB |= (1 << PB1);
		PORTB &= ~(1 << PB1);
		DDRB |= (1 << PB2);
		PORTB &= ~(1 << PB2);
		DDRB |= (1 << PB3);
		PORTB &= ~(1 << PB3);
		DDRB |= (1 << PB4);
		PORTB &= ~(1 << PB4);
		DDRB |= (1 << PB5);
		PORTB &= ~(1 << PB5);
		DDRB |= (1 << PB6);
		PORTB &= ~(1 << PB6);
		DDRB |= (1 << PB7);
		PORTB &= ~(1 << PB7);

	while(1) {
		
		int i=0;
			
			//rosu la semafor1 pt masini 
			for(i=0; i<700;i++){
							
				PORTB |= (1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB &= ~(1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
		
				_delay_ms(70);
	
				PORTB |= (1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB &= ~(1 << PB6);
				PORTB |= (1 << PB7);	
				
				_delay_ms(70);	
			
				PORTB &= ~(1 << PB0);
				PORTB |= (1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB &= ~(1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
			
				_delay_ms(70);	
			
				PORTB &= ~(1 << PB0);
				PORTB |= (1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB &= ~(1 << PB7);
		
				_delay_ms(70);	
			
				
				PORTB &= ~(1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB |= (1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB &= ~(1 << PB6);
				PORTB |= (1 << PB7);
				
				_delay_ms(70);	

				PORTB &= ~(1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB |= (1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB &= ~(1 << PB7);
				
				_delay_ms(70);	
		}	
		
		
		
		
		
			//galben la semafor1 pt masini
				for(i=0; i<300;i++){
					
				PORTB |= (1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB &= ~(1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
						
				_delay_ms(70);
						
				PORTB |= (1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB &= ~(1 << PB6);
				PORTB |= (1 << PB7);
						
				_delay_ms(70);
						
				PORTB |= (1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB &= ~(1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
			
				_delay_ms(70);
						
				PORTB |= (1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB &= ~(1 << PB7);
						
				_delay_ms(70);	

				PORTB &= ~(1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB |= (1 << PB3);
				PORTB &= ~(1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
						
				_delay_ms(70);

				PORTB &= ~(1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB |= (1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB &= ~(1 << PB7);
					
					_delay_ms(70);
				}
	
				  
			//verde la semfor1 pt masini
			for(i=0; i<700;i++){
				
				PORTB |= (1 << PB0);	
				PORTB &= ~(1 << PB1);
				PORTB &=~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB &= ~(1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
			
				_delay_ms(70);
			
				PORTB |= (1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB &= ~(1 << PB7);
			
				_delay_ms(70);

				PORTB &= ~(1 << PB0);
				PORTB |= (1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB &= ~(1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
			
				_delay_ms(70);
			
				PORTB &= ~(1 << PB0);
				PORTB |= (1 << PB1);
				PORTB &= ~(1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB |= (1 << PB5);
				PORTB &= ~(1 << PB6);
				PORTB |= (1 << PB7);
			
				_delay_ms(70);
			
				PORTB &= ~(1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB |= (1 << PB2);
				PORTB &=~(1 << PB3);
				PORTB &= ~(1 << PB4);
				PORTB |= (1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
		
				_delay_ms(70);

				PORTB &= ~(1 << PB0);
				PORTB &= ~(1 << PB1);
				PORTB |= (1 << PB2);
				PORTB &= ~(1 << PB3);
				PORTB |= (1 << PB4);
				PORTB &= ~(1 << PB5);
				PORTB |= (1 << PB6);
				PORTB |= (1 << PB7);
			
				_delay_ms(70);
				}
	
	}
}