编辑代码

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;
void (async function () {
  const input = (await readline()).split("");
  let arr = [];
  while (input.length >= 0) {
    let i = 1;
    while (i < input.length) {
      if (input[i] == "0" && input[i - 1] == "0") {
        // 将有效信号字符串截出来
        const silce = input.splice(0, i);
        arr.push(silce);
        break;
      }
      i++;
    }
    if (i == input.length) {
      arr.push(input);
      break;
    }
  }
  const ans = [];
  // 过滤掉长度为1的无效信号字符串，再对每个字符串进行判断，并根据长度排序
  arr = arr
    .filter((val) => val.length > 1)
    .filter((val) => isVal(val))
    .sort((a, b) => b.length - a.length);
  if (arr.length == 0) return console.log(-1);
  console.log(arr[0].join(""));
})();
const isVal = (arr) => {
  for (let i = 1; i < arr.length; i++) {
    if (arr[i] == arr[i - 1]) return false;
  }
  return true;
};