yagoff

const _ = require('lodash');
function solve(input, n) {
  const combinations = k_combinations(getArrayToN(input.length), n);

  let palindrome = 0;
  for (let i = 0; i < combinations.length - 1; i++) {
    let candidate = '';
    let previous = 0;
    for (let j = 0; j < combinations[i].length; j++) {
      if (combinations[i][j] === _.last(combinations[i])) {