#define LED1 2
#define LED2 4

#define S1 7
#define S2 8
#define S3 12

int s1state;
int s2state;
int s3state;

void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(S1, INPUT);
  pinMode(S2, INPUT);
  pinMode(S3, INPUT);
  Serial.begin(9600);
}

void loop() {
  s1state = digitalRead(S1);
  digitalWrite(LED1, s1state);
  s2state = digitalRead(S2);
  digitalWrite(LED2, s2state);
  s3state = digitalRead(S3);
  digitalWrite(LED1, s3state);
  digitalWrite(LED2, s3state);
 }