void setup() {
  // put your setup code here, to run once:
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(1, OUTPUT);
pinMode(A5, INPUT_PULLUP);
pinMode(A4, INPUT_PULLUP);
pinMode(A3, INPUT_PULLUP);
pinMode(A2, INPUT_PULLUP);
pinMode(A1, INPUT_PULLUP);
}

void loop(){
  // put your main code here, to run repeatedly:
if(digitalRead(A5)==LOW){digitalWrite(1, HIGH);}
if(digitalRead(A4)==LOW){digitalWrite(2, HIGH);}
if(digitalRead(A3)==LOW){digitalWrite(3, HIGH);}
if(digitalRead(A2)==LOW){digitalWrite(4, HIGH);}
if(digitalRead(A1)==LOW){digitalWrite(4, LOW);}
if(digitalRead(A1)==LOW){digitalWrite(3, LOW);}
if(digitalRead(A1)==LOW){digitalWrite(2, LOW);}
if(digitalRead(A1)==LOW){digitalWrite(1, LOW);}
}