

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;
void (async function () {
const nums = [];
const clearNums = [];
rl.on("line", function (line) {
nums.push(Number(line));
if (nums.length - 1 === nums[0]) {
nums.shift();
nums.forEach((f) => {
if (!clearNums.includes(f)) {
clearNums.push(f);
}
});
clearNums.sort((a, b) => {
return a - b;
});
clearNums.forEach((f) => console.log(f));
}
});
})();
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