#include <iostream>

//时间：2022年1月3日16:48:37
using namespace std;

int main(void)
{

    cout << "Y" <<endl;
    int grade;
    cout << "输入你的高考成绩：";
    cin >> grade;
    cout << "grade=" << grade <<endl;
    if(grade>600)
    {
        cout <<"一本" <<endl;
        if(grade>700)
        {
            cout << "北大"<<endl;
        }
        else if(grade>650)
        {
            cout <<"清华"<<endl;
        }
        else
        {
            cout << "人大"<<endl;
        }
    }
    else if (grade > 500)
    {
        cout << "二本"<<endl;
    }
    else if(grade>400)
    {
        cout << "三本"<<endl;
    }
    else
    {
        cout << "未考上本科"<<endl;
    }
    return 0;
}