acm pku 2418解题报告

#include <iostream>
#include <map>
#include<string>
using namespace std;
int count=0;
int main ()
{
map<string,int> mymap;
map<string,int>::iterator it;
string a;
while(getline(cin,a))
{
if(a.length()==0)
break;
mymap[a]++;
count++;
}

for ( it=mymap.begin() ; it != mymap.end(); it++ )
{
cout << (*it).first << " ";
printf("%.4lf/n",100*(*it).second/(double)count);
}

return 0;
}