1012 The Best Rank (25分)
To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mathematics (Calculus or Linear Algrbra), and E - English. At the mean time, we encourage students by emphasizing on their best ranks -- that is, among the four ranks with respect to the three courses and the average grade, we print the best rank for each student.
For example, The grades of C, M, E and A - Average of 4 students are given as the following:
StudentID C M E A
310101 98 85 88 90
310102 70 95 88 84
310103 82 87 94 88
310104 91 91 91 91
Then the best ranks for all the students are No.1 since the 1st one has done the best in C Programming Language, while the 2nd one in Mathematics, the 3rd one in English, and the last one in average.
Input Specification:
Each input file contains one test case. Each case starts with a line containing 2 numbers N and M (≤2000), which are the total number of students, and the number of students who would check their ranks, respectively. Then N lines follow, each contains a student ID which is a string of 6 digits, followed by the three integer grades (in the range of [0, 100]) of that student in the order of C, M and E. Then there are M lines, each containing a student ID.
Output Specification:
For each of the M students, print in one line the best rank for him/her, and the symbol of the corresponding rank, separated by a space.
The priorities of the ranking methods are ordered as A > C > M > E. Hence if there are two or more ways for a student to obtain the same best rank, output the one with the highest priority.
If a student is not on the grading list, simply output N/A.
Sample Input:
5 6
310101 98 85 88
310102 70 95 88
310103 82 87 94
310104 91 91 91
310105 85 90 90
310101
310102
310103
310104
310105
999999
Sample Output:
1 C
1 M
1 E
1 A
3 A
N/A
/*
刚开始写的时候陷入了一个误区，那就是只保存一个排名，同时记录所选用
的排名编号，阅读别人的博客之后发现可以同时保存不同种类分数排名，
记录最好的种类的下标；
思路如下：
因为存在四种分数，所以结构体中定义大小为4的分数数组，和排名数组
记录顺序分别为ACME，对应下标0123
有相同分数时，排名为1,1,3,4,5，而不是1,1,2,3,4
对分数进行四舍五入，应该除以3.0而不是3，再加上0.5
定义一个数组记录ID对应的编号，编号时需要注意，
假设ID对应的编号为0则表示不存在，所以编号时不能编号为0，
博主代码现将编号+1，最后输出再将编号-1。
*/
#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<map>
using namespace std;
struct node{
int score[4];
int rank[4];
int best,id;
}stu[2005];
int flag =0;
int mp[1000000];
bool cmp(const node &a,const node &b){
return a.score[flag] > b.score[flag];
}
int main(){
// freopen("input.txt","r",stdin);
int n,m,id;
scanf("%d%d",&n,&m);
for(int i = 0;i<n;i++){
scanf("%d%d%d%d",&stu[i].id,&stu[i].score[1],&stu[i].score[2],&stu[i].score[3]);
stu[i].score[0] = (stu[i].score[1]+stu[i].score[2]+stu[i].score[3])/3.0+0.5;
}
for(flag = 0;flag < 4;flag++){
sort(stu,stu+n,cmp);
stu[0].rank[flag] = 1;
for(int i = 1;i < n;i++){
stu[i].rank[flag] = i+1;
if(stu[i].score[flag] == stu[i-1].score[flag]){
stu[i].rank[flag] = stu[i-1].rank[flag];
}
}
}
for(int i = 0;i < n;i++){
mp[stu[i].id] = i+1;
stu[i].best = 0;
int minn = stu[i].rank[0];
for(int j = 1;j < 4;j++){
if(minn > stu[i].rank[j]){
minn = stu[i].rank[j];
stu[i].best = j;
}
}
}
string r="ACME";
for(int i = 0;i < m;i++){
scanf("%d",&id);
int temp = mp[id];
if(!temp){
printf("N/A\n");
}else{
int t = stu[temp-1].best;
printf("%d %c\n",stu[temp-1].rank[t],r[t]);
}
}
return 0;
}