#define eastR 12
#define eastY 11
#define eastG 10
#define eastB 13
#define westR 2
#define westY 1
#define westG 0
#define westB 3
void setup() {
  pinMode(eastR,OUTPUT);
  pinMode(eastY,OUTPUT);
  pinMode(eastG,OUTPUT);
  pinMode(eastB,INPUT);
  pinMode(westR,OUTPUT);
  pinMode(westY,OUTPUT);
  pinMode(westG,OUTPUT);
  pinMode(westB,INPUT);

  digitalWrite(eastR, HIGH);
  digitalWrite(eastY, LOW);
  digitalWrite(eastG, LOW);
  digitalWrite(westG, HIGH);
  digitalWrite(westY, LOW);
  digitalWrite(westR, LOW);
}

void loop() {
  if(digitalRead(eastB)==HIGH && digitalRead(eastR)==HIGH){
    digitalWrite(westG, LOW);
    digitalWrite(westY,HIGH);
    delay(1000);
    digitalWrite(westY, LOW);
    digitalWrite(westR, HIGH);
    delay(5000);
    digitalWrite(eastR, LOW);
    digitalWrite(eastY, HIGH);
    delay(1000);
    digitalWrite(eastY, LOW);
    digitalWrite(eastG, HIGH);
  }
  if(digitalRead(westB)==HIGH && digitalRead(westR)==HIGH){
    digitalWrite(eastG, LOW);
    digitalWrite(eastY,HIGH);
    delay(1000);
    digitalWrite(eastY, LOW);
    digitalWrite(eastR, HIGH);
    delay(5000);
    digitalWrite(westR, LOW);
    digitalWrite(westY, HIGH);
    delay(1000);
    digitalWrite(westY, LOW);
    digitalWrite(westG, HIGH);
  }
  

}