#include<bits/stdc++.h> using namespace std; bool cmp(string x,string y) { return x+y>y+x;//合起来判断不然WA } int main() { //freopen("bignum.in","r",stdin); //freopen("bignum.out","w",stdout); int n; string a[105]; cin>>n; for(int i=0;i<n;i++) { cin>>a[i]; } sort(a,a+n,cmp);//浅浅用一下sort for(int i=0;i<n;i++) { cout<<a[i]; } return 0;//华丽结束 }