int led=2;
int but1=3;
int but2=4;
_Bool ai1, ai2;

void setup() {
  Serial.begin(9600);
 pinMode(2,OUTPUT);
 pinMode(3,INPUT);
 pinMode(4,INPUT); // put your setup code here, to run once:
ai1=0;
ai2=0;
}

void loop() {
 if(digitalRead(but1)==HIGH&&ai1==0){
  ai1=1;
 }
 if(digitalRead(but1)==LOW&&ai1==1){
  digitalWrite(led, HIGH);
  ai1=0;
 }
 if(digitalRead(but2)==HIGH&&ai2==0){
  ai2=1;
 }
if(digitalRead(but2)==LOW&&ai2==1){
  digitalWrite(led, LOW);
  ai2=0;
}

Serial.println(digitalRead(but1));
Serial.println(digitalRead(but2));

  // put your main code here, to run repeatedly:

}