const int pin[4]={11,10,9,6};
#define an A0 
#define br A1
int x=0,b=0,bb=0;
void setup() {
  // put your setup code here, to run once: 
  Serial.begin(9600);
  for(int c=0 ; c<5 ; c++){
    pinMode(pin[c], INPUT);
  }
}
void loop() {
  x=analogRead(A0);
  b=analogRead(A1);
  bb=b*.1;
  Serial.println(b);
  //int n =1024;
  for (int cs=0;cs<5;cs++){
    analogWrite(pin[cs],0);
  }
  if (x>=200){
  analogWrite(pin [0], bb);
  if(x>400){
    analogWrite(pin[1], bb);
    if(x>600){
      analogWrite(pin[2], bb);
      if(x>800){
        analogWrite(pin[3],bb);
      }
    }
  }
}
}