#include <stdio.h>
#include <stdlib.h>

#define INT_BITS 32

typedef struct TrieNode {
    struct TrieNode* bit[2];
} TrieNode;

TrieNode* newTrieNode() {
	TrieNode* newNode = (TrieNode*)malloc(sizeof(TrieNode));
    if (newNode != NULL) {
        newNode->bit[0] = newNode->bit[1] = NULL;
    }
    return newNode;
}

void insert(TrieNode* root, int number) {
    TrieNode* current = root;
    for (int i = INT_BITS - 1; i >= 0; i--) {
        int bit = (number >> i) & 1;
        if (current->bit[bit] == NULL) {
            current->bit[bit] = newTrieNode();
		}
		current = current->bit[bit];
	}
}

int findMaxXOR(TrieNode* root, int number) {
    TrieNode* current = root;
    int maxXOR = 0;
    for (int i = INT_BITS - 1; i >= 0; i--) {
        int bit = (number >> i) & 1;
        if (current->bit[1 - bit] != NULL) {
            maxXOR |= (1 << i);
            current = current->bit[1 - bit];
        } else {
            current = current->bit[bit];
        }
    }
    return maxXOR;
}

void freeTrie(TrieNode* root) {
    if (root != NULL) {
        freeTrie(root->bit[0]);
        freeTrie(root->bit[1]);
        free(root);
    }
}

int getMaxXOR(int* arr, int size) {
    TrieNode* root = newTrieNode();
    int maxXOR = 0;
    for (int i = 0; i < size; i++) {
		insert(root, arr[i]);
		int currentXOR = findMaxXOR(root, arr[i]);
        if (currentXOR > maxXOR) {
            maxXOR = currentXOR;
        }
    }
    int result = maxXOR;
    freeTrie(root);
    return result;
}

int main() {
    int arr[] = {3, 10, 5, 25, 2, 8};
    int size = sizeof(arr) / sizeof(arr[0]);
    int result = getMaxXOR(arr, size);
    printf("Maximum XOR: %d\n", result);
	return 0;
}

#include <litec.h>
#include <trade.h>

#define INT_BITS 32
#define MAX_NODES 1024
#define DATA_SIZE 20

// Trie node structure
typedef struct TrieNode {
    struct TrieNode* bit[2];
} TrieNode;

TrieNode trieNodes[MAX_NODES];
int trieNodeCount = 0;

// Function prototypes
TrieNode* newTrieNode();
void insert(TrieNode* root, int number);
int findMaxXOR(TrieNode* root, int number);
int getMaxXOR(int* arr, int size);
var calculateMaximumXOR(var spreadData[]);
string generateTradingSignal(var maxXOR, var threshold);

void run() 
{
    BarPeriod = 60; // Set your bar period
    LookBack = 100; // Set your lookback period
    
    while(asset(loop("Asset1", "Asset2"))) {
        var spreadData[DATA_SIZE]; // Array to hold spread data
        // Populate spreadData with your financial data logic
        // Example: spreadData[i] = priceClose(i) - priceClose(i+1) for some i

        var threshold = 0.02;
        var maxXOR = calculateMaximumXOR(spreadData);
        string signal = generateTradingSignal(maxXOR, threshold);

        if (!strcmp(signal, "Buy")) {
            enterLong();
        } else if (!strcmp(signal, "Sell")) {
            enterShort();
        }
        // "No Action" case is implicitly handled by doing nothing
    }
}

var calculateMaximumXOR(var spreadData[]) 
{
    int intSpreadData[DATA_SIZE];
    for(int i = 0; i < DATA_SIZE; i++) {
        intSpreadData[i] = (int)(spreadData[i] * 10000); // Scale and convert to int
    }
    return getMaxXOR(intSpreadData, DATA_SIZE);
}

string generateTradingSignal(var maxXOR, var threshold) 
{
    if (maxXOR > threshold) {
        return "Buy";
    } else if (maxXOR < -threshold) {
        return "Sell";
    } else {
        return "No Action";
    }
}

TrieNode* newTrieNode() { /* ... */ }
void insert(TrieNode* root, int number) { /* ... */ }
int findMaxXOR(TrieNode* root, int number) { /* ... */ }
int getMaxXOR(int* arr, int size) { /* ... */ }

// Function prototypes
void ConvertToBinary(vars priceData, int* binaryRepresentation, int length);
void XORBinaryLists(int* list1, int* list2, int* result, int length);
int FindMaximumXOR(int* xorResult, int length);

void run() 
{
    // Set parameters
    BarPeriod = 60; // 1-hour bars
    StartDate = 2020;
    EndDate = 2021;
    LookBack = 100; // Look back period for initialization

    // Define the list of currency pairs
    string pairs[] = {"EURUSD", "GBPUSD", "USDJPY", "GBPJPY", "USDCAD", "EURAUD", "EURJPY", "AUDCAD",
               "AUDJPY", "AUDNZD", "AUDUSD", "CADJPY", "EURCAD", "EURCHF", "EURGBP", "EURNZD", 
               "GBPCAD", "GBPCHF", "NZDCAD", "NZDJPY", "NZDUSD", "USDCHF", "CHFJPY", "AUDCHF", 
               "GBPNZD", "NZDCHF", "CADCHF", "GBPAUD"
    int numPairs = sizeof(pairs) / sizeof(string);

    // Loop through each currency pair
    for(int i = 0; i < numPairs; i++) 
    {
        asset(pairs[i]);
        vars ClosePrices = series(priceClose());

        // Prepare binary representations for XOR operation
        int length = LookBack;
        int binaryPriceX[length];
        int binaryPriceY[length];

        // Fill binary representations (example: comparing current prices with a moving average)
        ConvertToBinary(ClosePrices, binaryPriceX, length);
        ConvertToBinary(series(SMA(ClosePrices, 20)), binaryPriceY, length); // 20-period SMA for comparison

        // Perform XOR operation
        int xorResult[length];
        XORBinaryLists(binaryPriceX, binaryPriceY, xorResult, length);

        // Find Maximum XOR value
        int max_xor = FindMaximumXOR(xorResult, length);

        // Example trading logic based on Maximum XOR
        if(max_xor == 1) // Significant divergence detected
            enterLong();
        else
            exitLong();
    }
}

void ConvertToBinary(vars priceData, int* binaryRepresentation, int length) 
{
    int i;
    for(i = 0; i < length; i++) 
    {
        binaryRepresentation[i] = (priceData[i] > priceData[0]) ? 1 : 0;
    }
}

void XORBinaryLists(int* list1, int* list2, int* result, int length) 
{
    int i;
    for(i = 0; i < length; i++) 
    {
        result[i] = list1[i] ^ list2[i];
    }
}

int FindMaximumXOR(int* xorResult, int length) 
{
    int max_xor = 0;
    for(int i = 0; i < length; i++) 
    {
        if(xorResult[i] > max_xor) 
            max_xor = xorResult[i];
    }
    return max_xor;
}