const { parentPort, workerData } = require('worker_threads');

function multiplyMatricesPart(A, B, start, end) {
    const n = A.length;
    const C = Array.from({ length: n }, () => Array(n).fill(0));
    
    for (let i = start; i < end; ++i) {
        for (let j = 0; j < n; ++j) {
            for (let k = 0; k < n; ++k) {
                C[i][j] += A[i][k] * B[k][j];
            }
        }
    }
    return C;
}

const { A, B, start, end } = workerData;
const result = multiplyMatricesPart(A, B, start, end);
parentPort.postMessage(result);