int cislo;
bool test = true;
bool test1 = true;
bool test2 = true;

void setup() {
  pinMode(A0, INPUT_PULLUP);
  pinMode(A1, INPUT_PULLUP);
  pinMode(A2, INPUT_PULLUP);
  Serial.begin(9600);
}

void loop() 
{
  if(digitalRead(A0) == 0 && test == true)
  {
    test = false;
    cislo++;
    Serial.println(cislo);
  }
  else if(digitalRead(A0) != 0 && test != true)
  {
    test = true;
  }

  if(digitalRead(A1) == 0 && test1 == true)
  {
    test1 = false;
    cislo = cislo + 5;
    Serial.println(cislo);
  }
  else if(digitalRead(A1) != 0 && test1 != true)
  {
    test1 = true;
  }

  if(digitalRead(A2) == 0 && test2 == true)
  {
    test2 = false;
    cislo = cislo + 10;
    Serial.println(cislo);
  }
  else if(digitalRead(A2) != 0 && test2 != true)
  {
    test2 = true;
  }

}