text: #!/home/imtiaz/.local/bin/checkio --domain=js run skew-symmetric-matrix
  
  // In mathematics, particularly in linear algebra,    a skew-symmetric matrix (also known as an antisymmetric or antimetric) is a square matrixAwhich is transposed    and negative.    This means that it satisfies the equationA = −AT.If the entry in the i-th row and j-th column is aij, i.e.A = (aij)then the symmetric condition becomesaij= −aji.
  // 
  // You should determine whether the specified square matrix is skew-symmetric    or not.
  // 
  // You can find more details on Skew-symmetric matrices on itsWikipedia page.
  // 
  // Input:A square matrix as a list of lists with integers.
  // 
  // Output:If the matrix is skew-symmetric or not as a boolean.
  // 
  // Precondition:0<N<5
  // 
  // 
  // 
  // END_DESC
  
  "use strict";
  
  function symmetric(matrix) {
      // your code here
      return 0;
  }
  
  var assert = require('assert');
  if (!global.is_checking) {
      console.log('Example:')
      console.log(symmetric([
          [0, 1, 2],
          [-1, 0, 1],
          [-2, -1, 0]]))
  
      // These "asserts" using only for self-checking and not necessary for auto-testing
  
      assert.equal(symmetric([
          [0, 1, 2],
          [-1, 0, 1],
          [-2, -1, 0]]), true);
      assert.equal(symmetric([
          [0, 1, 2],
          [-1, 1, 1],
          [-2, -1, 0]]), false);
      assert.equal(symmetric([
          [0, 1, 2],
          [-1, 0, 1],
          [-3, -1, 0]]), false);
      console.log("Coding complete? Click 'Check' to earn cool rewards!");
  }