const int wires[] = {2, 3, 4};   // the numbers of the first through third wires
const int lights[] = {7, 9, 11}; // the numbers of the first through third lights
const int buzzer1 = 6; // the number of the first through third buzzers
const int period = 2000;         // The amount of time that the light will be on

int getWire(int x)
{
    return digitalRead(wires[x]);
}

void setup()
{
    Serial.begin(9600);
    delay(2000);
    for (int i = 0; i < 3; i++)
    {
        pinMode(wires[i], INPUT);
        pinMode(lights[i], OUTPUT);
    }
    pinMode(buzzer1, OUTPUT);
}

unsigned long lastTouches[] = {0, 0, 0}; // initialize each of the lastTouches
unsigned long currTime = 0;              // initialize currTime

void loop()
{
    currTime = millis(); // update currTime to the number of milliseconds since beginning
    for (int i = 0; i < 3; i++)
    {
        if (getWire(i) == LOW)
        {
            lastTouches[i] = currTime;
            digitalWrite(lights[i], HIGH); // turn the light on
            tone(buzzer1, 800);         // turn the buzzer on
            Serial.print("wire ");
            Serial.print(i);
            Serial.print(" status ");
            Serial.println(digitalRead(getWire(i)));
        }
        else
        {
            noTone(buzzer1); // turn the buzzer off
        }
        // turn off the light if it hasn't touched in the last period
        if (currTime - lastTouches[i] >= period)
        {
            digitalWrite(lights[i], LOW);
        }
    }
}