#include <TinyWire.h> 

void setup() {
 
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
}

int a1,a2,a3,a4;
void loop() {
 TinyWire.requestFrom(9,8); 
 while (TinyWire.available()) { 

      
     a1=readNum();
     a2=readNum();
     a3=readNum();
     a4=readNum();
     if(a1 < 500 || a2 < 500 || a3 < 500 || a4 < 500) {
        digitalWrite(4, HIGH);
     }else if(a1 < 100 || a2 < 100 || a3 < 100 || a4 < 100) {
        digitalWrite(3, LOW);
     }else{
        digitalWrite(4, LOW);
        digitalWrite(3, HIGH);
     }
  }
}

int readNum(){
  byte a, b;
  int n;

  a = TinyWire.read();
  b = TinyWire.read();

  n = a;
  n = (n << 8) | b;
  return n;
}