#define camshaft1 13
#define camshaft2 12
#define camshaft3 11
#define camshaft4 10

#define relay1 9
#define relay2 8
#define relay3 7
#define relay4 6

int x = 0; // Remove redundant declaration
int y = 1;

void setup() {
  pinMode(camshaft1, INPUT_PULLUP);
  pinMode(camshaft2, INPUT_PULLUP);
  pinMode(camshaft3, INPUT_PULLUP);
  pinMode(camshaft4, INPUT_PULLUP);
  pinMode(relay1, OUTPUT); // Changed to OUTPUT
  pinMode(relay2, OUTPUT); // Changed to OUTPUT
  pinMode(relay3, OUTPUT); // Changed to OUTPUT
}

void loop() {
  static int x = 0; // Initialize x if needed

  if (digitalRead(camshaft2) == LOW) {
      digitalWrite(relay2, LOW);
      digitalWrite(relay3, LOW);
      digitalWrite(relay1, LOW); 
    }
  else if (digitalRead(camshaft1) == LOW) {
    if (x == 1) { 
      digitalWrite(relay2, LOW);
      digitalWrite(relay3, LOW);
      digitalWrite(relay1, HIGH); 
    } else if (x > 1) {
      digitalWrite(relay2, LOW);
      digitalWrite(relay3, LOW);
      digitalWrite(relay1, HIGH); 
    }
    x++; // Added semicolon
  } else if (digitalRead(camshaft3) == LOW) {
    digitalWrite(relay1, LOW);
    digitalWrite(relay3, LOW);
    digitalWrite(relay2, HIGH);
  } else if (digitalRead(camshaft4) == LOW) {
    digitalWrite(relay1, LOW);
    digitalWrite(relay2, LOW);
    digitalWrite(relay3, HIGH);
  } else {
    digitalWrite(relay1, LOW);
    digitalWrite(relay2, LOW);
    digitalWrite(relay3, LOW);
  }
 }