#include <iostream>

using namespace std;

int main()
{
    int n;
    cin >> n;
    int s1 = 0,s2 = 0; 
    for(int i = 0;i < n;i ++ ){
        int x;
        cin >> x;
        if(x >= 85) s1 ++ ,s2 ++;
        else if(x >= 60) s1 ++ ;
    }

    // cout << int((double)s1 * 100 / n + 0.5)<< "%" <<endl;
    // cout << int((double)s2 * 100 / n + 0.5)<< "%" <<endl;

    printf("%d\%\n",(int)(s1*100.0/n+0.5));//进行四舍五入操作
    printf("%d\%\n",(int)(s2*100.0/n+0.5));

    return 0;

}