hdu 1004

map的使用，还不是很会用啊。。。。

#include <iostream>
#include <string>
#include <map>
using namespace std;
int main()
{
    int n;
    string s,s2;
    while(scanf("%d",&n)&&n!=0)
    {
          map <string,int> m;
          map <string,int> :: iterator p;                    
          for (int i = 1;i <= n;i++)
          {
              cin>>s;
              m[s]++;
          }
          int max=-1;
          for (p = m.begin();p!=m.end();p++)
          if(p->second > max)
          {
               max = p->second;
               s2 = p->first;       
          }  
          cout<<s2<<endl;
    }
    return 0;
}