// C++ code
//
void setup()
{
  for(int i=2;i<=17;i++)
  	pinMode(i, OUTPUT);
  randomSeed(analogRead(A5));
  Serial.begin(9600);
  pinMode(A4, INPUT_PULLUP);
}
int stop;
int ledmd=0;
void loop()
{
  
  if( digitalRead(A4)==0 ) ledmd=1;    
  if(ledmd==0){    
      			stop=random(16)+2;
  				Serial.print("stop="); 
  				Serial.println(stop);
  				}
  if(ledmd==1)
  {
    
    for(int j=0;j<3;j++)
  {
    for(int i=2;i<=17;i++)
  	{
      digitalWrite(i, HIGH);
  	  delay(20); // Wait for 1000 millisecond(s)
  	  digitalWrite(i, LOW);    
     }  
  }
  
  for(int j=0;j<2;j++)
  {
    for(int i=2;i<=17;i++)
  	{
      digitalWrite(i, HIGH);
  	  delay(40); // Wait for 1000 millisecond(s)
  	  digitalWrite(i, LOW);    
     }  
  }
  
   for(int j=0;j<2;j++)
  {
    for(int i=2;i<=17;i++)
  	{
      digitalWrite(i, HIGH);
  	  delay(100); // Wait for 1000 millisecond(s)
  	  digitalWrite(i, LOW);    
     }       
  }
   
  for(int i=2;i<=stop;i++)
  	{
      digitalWrite(i, HIGH);
  	  delay(200); // Wait for 1000 millisecond(s)
  	  digitalWrite(i, LOW);    
     }   
  ledmd=0;
  digitalWrite(stop, HIGH);
    
  }
  
}