杭电OJ—— 1084 What Is Your Grade?

What Is Your Grade?

Problem Description

“Point, point, life of student!”

This is a ballad（歌谣）well known in colleges, and you must care about your score in this exam too. How many points can you get? Now, I told you the rules which are used in this course.

There are 5 problems in this final exam. And I will give you 100 points if you can solve all 5 problems; of course, it is fairly difficulty for many of you. If you can solve 4 problems, you can also get a high score 95 or 90 (you can get the former(前者) only when your rank is in the first half of all students who solve 4 problems). Analogically（以此类推）, you can get 85、80、75、70、65、60. But you will not pass this exam if you solve nothing problem, and I will mark your score with 50.

Note, only 1 student will get the score 95 when 3 students have solved 4 problems.

I wish you all can pass the exam! 

Come on!

 

Input

Input contains multiple test cases. Each test case contains an integer N (1<=N<=100, the number of students) in a line first, and then N lines follow. Each line contains P (0<=P<=5 number of problems that have been solved) and T（consumed time）. You can assume that all data are different when 0<p.

A test case starting with a negative integer terminates the input and this test case should not to be processed.

 

Output

Output the scores of N students in N lines for each case, and there is a blank line after each case.

 

Sample Input

4
5 06:30:17
4 07:31:27
4 08:12:12
4 05:23:13
1
5 06:30:17
-1

 

Sample Output

100
90
90
95

100

 

Author

lcy

 

     题目不是很难，注意一下输出格式还有一些别的东西就可以了！我下面写的程序貌似长了一点，不过意思明了，凑合着看吧！很久没写了，练练手！

#include <iostream>
#include <algorithm>
using namespace std;
const int SIZE = 101;

typedef struct    /*结构体，用于存储输入的数据*/
{
	int solved;   /*解决问题的数目*/
	int located;  /*学生的位置*/
	int h, m, s;  /*所花费的时间*/
	int soc;      /*最终的成绩*/
}time;

bool cmp(time &bi1, time &bi2)    /*比较函数，用于排序*/
{
	if (bi1.h > bi2.h) return false;
	else if (bi1.h < bi2.h) return true;
	else
	{
       if (bi1.m > bi2.m) return false;
	   else if (bi1.m < bi2.m) return true;
	   else
	   {
		   if (bi1.s > bi2.s) return false;
	       else if (bi1.s < bi2.s) return true;
	   }
	}
}

int main()
{
	int num;
	time stu[SIZE];
	time sortArr[4][SIZE];
	int p, q , r, k, i;
	while((cin >> num) && (num >= 0))
	{
	    p = q = r = k = 0;
		for (i = 0; i < num; i++)
		{
			cin >> stu[i].solved;
			scanf ("%d:%d:%d", &stu[i].h, &stu[i].m, &stu[i].s);
			stu[i].located = i;  /*记录下输入时的位置*/

			/*下面的思路就是：分数能处理的就处理，如解决了5道题（100）和0道题（50）
			不能处理的话，我们先将该数分类存入一个数组，之后再做处理
			*/
			if (stu[i].solved == 5)
			{
				stu[i].soc = 100;
			}
			if (stu[i].solved == 4)
			{
				sortArr[0][p] = stu[i];
				p++;
			}
			if (stu[i].solved == 3)
			{
				sortArr[1][q] = stu[i];
				q++;
			}
			if (stu[i].solved == 2)
			{
				sortArr[2][r] = stu[i];
				r++;
			}
            if (stu[i].solved == 1)
			{
				sortArr[3][k] = stu[i];
				k++;
			}
			if (stu[i].solved == 0)
			{
				stu[i].soc = 50;
			}
		}

		if (p >= 1)
		{
			sort (sortArr[0], sortArr[0] + p, cmp);  /*先排序，按照耗时从小到大排序*/
			for (i = 0; i < p / 2; i++) /*前半部分得高分*/
			{
				stu[sortArr[0][i].located].soc = 95;
			}
			for (; i < p; i++)  /*后半部分得低分*/
			{
				stu[sortArr[0][i].located].soc = 90;
			}
		}
		/*以下类似*/
		if (q >= 1)
		{
			sort (sortArr[1], sortArr[1] + q, cmp);
			for (i = 0; i < q / 2; i++)
			{
				stu[sortArr[1][i].located].soc = 85;
			}
			for (; i < q; i++)
			{
				stu[sortArr[1][i].located].soc = 80;
			}
		}

		if (r >= 1)
		{
			sort (sortArr[2], sortArr[2] + r, cmp);
			for (i = 0; i < r / 2; i++)
			{
				stu[sortArr[2][i].located].soc = 75;
			}
			for (; i < r; i++)
			{
				stu[sortArr[2][i].located].soc = 70;
			}
		}

		if (k >= 1)
		{
			sort (sortArr[3], sortArr[3] + k, cmp);
			for (i = 0; i < k / 2; i++)
			{
				stu[sortArr[3][i].located].soc = 65;
			}
			for (; i < k; i++)
			{
				stu[sortArr[3][i].located].soc = 60;
			}
		}

		for (i = 0; i < num; i++)
		{
			cout << stu[i].soc << endl;
		}
		cout << endl;
	}
	system ("pause");
	return 0;
}