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(n = await readline()){
let arr=[]
while(n){
n--
let str=await readline()
arr.push(str)
}
arr.sort().forEach(item=>{
console.log(item)
})
}
}()