void setup() {
  // put your setup code here, to run once:
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,INPUT_PULLUP);
  Serial.begin(9600);
}

unsigned long starttime1 = 0;
unsigned long stoptime1 = 0;

bool buttonState;
int allState = 1;

int ledtime1 = 1000;
int ledtime2 = 5000;

int medium;

void loop() {
  // put your main code here, to run repeatedly:
  stoptime1 = millis();
  if(allState > 0)
  {
    if(stoptime1 - starttime1 <= ledtime2 && stoptime1 - starttime1 > ledtime1){
    digitalWrite(2,HIGH);
    digitalWrite(3,LOW);
  }else if(stoptime1 - starttime1 <= ledtime1){
    digitalWrite(3,HIGH);
    digitalWrite(2,LOW);
  }else{
    starttime1 = stoptime1;
  }
  }
  else
  {
    if(stoptime1 - starttime1 <= ledtime2 && stoptime1 - starttime1 > ledtime1){
    digitalWrite(2,LOW);
    digitalWrite(3,HIGH);
  }else if(stoptime1 - starttime1 <= ledtime1){
    digitalWrite(3,LOW);
    digitalWrite(2,HIGH);
  }else{
    starttime1 = stoptime1;
  }
  }
  buttonState = digitalRead(4);
  delay(100);
  if(buttonState == 0){
    allState = -allState;
  }
}