uva 10905 Children's Game （用String的话，就是水题）

#include <algorithm>
#include <iostream>
#include <cstring>
#include <cstdio>
#include <string>
#include <stack>
#include <cmath>
#include <queue>
#include <set>
#include <map>
typedef long long ll;
using namespace std;

const int inf=0x3f3f3f3f;
const int maxn=1e6+10;

int n;
string str[55];


bool cmp(string a,string b){
	string p=a+b;
	string q=b+a;
	return p>q;
}
int main()
{

	while(scanf("%d",&n)!=EOF){
		if(n==0)break;
		for(int i=0;i<n;++i){
			cin>>str[i];
		}
		sort(str,str+n,cmp);
		for(int i=0;i<n;++i){
			cout<<str[i];
		}
		cout<<endl;
	}
	return 0;
}