const int led1 = 10;
const int led2 = 12;
const int SwA = 2;
const int SwB = 3;
const int SwC = 4;
const int SwD = 5;

void setup() 
{
  pinMode(SwA, INPUT);
  pinMode(SwB, INPUT);
  pinMode(SwC, INPUT);
  pinMode(SwD, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
}

void loop() 
{
int val1 = digitalRead(SwA);
int val2 = digitalRead(SwB);
int val3 = digitalRead(SwC);
int val4 = digitalRead(SwD);

if (val1 == HIGH && val2 == HIGH)
{
  digitalWrite(led1, HIGH);
}
else
{
  digitalWrite(led1, LOW);
}  

if (val3 == HIGH && val4 == HIGH)
{digitalWrite(led2, HIGH);
}
else
{digitalWrite(led2, LOW);}
}