void setup() {
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, INPUT_PULLUP);
pinMode(5, INPUT_PULLUP);
pinMode(6, INPUT_PULLUP);
}

void loop() {
if(digitalRead(5)==LOW ){
  digitalWrite (3, HIGH );
}
if (digitalRead(6)==LOW ){
  digitalWrite (2, HIGH );
}
if (digitalRead(4)==LOW ){
  digitalWrite (2,LOW );
  digitalWrite (3,LOW );
 }
}