#include<bits/stdc++.h>
using namespace std;
int n,maxx=0,f=1;
struct Person
{
    string name,s;
    int num;
}p[105];
int main(){
    freopen("noi_online2020_save.in","r",stdin);
    freopen("noi_online2020_save.out","w",stdout);
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
    {
        cin>>p[i].name>>p[i].s;
        for(int j=0;j<=p[i].s.length();j++)
            if(p[i].s[j]=='s'&&p[i].s[j+1]=='o'&&p[i].s[j+2]=='s')
                p[i].num++;
        maxx=max(maxx,p[i].num);
    }
    for(int i=1;i<=n;i++)
        if(p[i].num==maxx)
        {
            if(f)
            {
                cout<<p[i].name;
                f=0;
            }
            else
                cout<<" "<<p[i].name;
        }
            
    puts("");
    printf("%d\n",maxx);
    return 0;
}