const rl = require("readline").createInterface({ input: process.stdin }); var iter = rl[Symbol.asyncIterator](); const readline = async () => (await iter.next()).value; void async function () { // Write your code here while(str = await readline()){ let map = {} for(let i=0; i<str.length; i++) { let el = str[i] if (map[el]) { map[el] ++ } else { map[el] = 1 } } let min = Math.min(...Object.values(map)) for (let el in map) { if (map[el] == min) { str = str.replaceAll(el, '') } } console.log(str) } }()