Hardwood Species

http://poj.org/problem?id=2418

 #include<cstdio>
 #include<cstring>
 #include<string>
 #include<iostream>
 #include<map>
 #include<algorithm>
 using namespace std;
 char s[];
 int main(){

    //freopen("sb.txt","r",stdin);
    long long cnt=;
    map<string,int>q;
    while(gets(s))
    {
        cnt++;
        if(q.find(s)==q.end())
        {
            q[s]=;
        }
        else q[s]++;
    }
    map<string,int>::const_iterator inter=q.begin();
    while(inter!=q.end())
    {
        cout<<inter->first;
        printf(" %.4lf\n",inter->second*100.0/cnt);
        inter++;
    }
    return ;
 }