#define t1 1 
#define t2 2 
#define led 8  



void setup() {
  // put your setup code here, to run on
pinMode(t1 , INPUT_PULLUP);
pinMode(t2, INPUT_PULLUP);
pinMode(led , OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
if (digitalRead(t1 )==LOW)
if (digitalRead(t2 )==LOW)
digitalWrite(led , HIGH);
digitalWrite(led , LOW);
}