#include <Arduino.h>
#include <stack>  // Include stack library

std::stack<int> st;  // Define stack

void setup() {
    Serial.begin(6000);

    // Push devices onto the stack (Last In, First Out)
    int pins[] = {13, 12, 33, 14, 25};
    for (int i = 0; i < 5; i++) {
        pinMode(pins[i], OUTPUT);
        digitalWrite(pins[i], LOW); // Ensure all are OFF
        st.push(pins[i]);  // Push to stack
    }
}

void loop() {
    if (!st.empty()) {
        int device = st.top(); // Get the top device
        st.pop(); // Remove it from stack

        Serial.print("Activating device: ");
        Serial.println(device);
        digitalWrite(device, HIGH); // Activate

        // delay(1000); // Simulate operation

        Serial.print("Deactivating device: ");
        Serial.println(device);
        digitalWrite(device, LOW); // Deactivate
    } else {
        Serial.println("All devices processed. Restarting...");
        // delay(2000);

        // Refill stack for next cycle
        int pins[] = {13, 12, 33 , 14, 25};
        for (int i = 0; i < 5; i++) {
            st.push(pins[i]);
        }
    }
}