#include <stdio.h>
#include <cstring>
#include <iostream>
const int MAX_STU = 10;

struct Stu{
	int code;
	char num[5];
	int cla;
	char name[10];
	float mathScore;
	float phyScore;
	float engScore;
	float sumScore;
	float aveScore;
	bool isInserted;
	bool isModified;
};

void toCode(struct Stu s[]){
	for(int i=0;i<MAX_STU;i++){
		sscanf(s[i].num, "%d", &s[i].code);
	}
}

void Input(struct Stu s[]){
	for(int i=0;i<MAX_STU;i++){
		if(s[i].code==0){
			scanf("%s\t%d\t%s\t%f\t%f\t%f",&s[i].num,&s[i].cla,&s[i].name,&s[i].mathScore,&s[i].phyScore,&s[i].engScore);
		    s[i].sumScore=s[i].mathScore+s[i].phyScore+s[i].engScore;
		    break;
		}
	}
	toCode(s);
}

void Output(struct Stu s[]){
	toCode(s);
	for(int i=0;i<MAX_STU;i++){
		if(s[i].code!=0){
			printf("%s  %d  %s  %.1f  %.1f  %.1f  %.1f\n",s[i].num,s[i].cla,s[i].name,s[i].mathScore,s[i].phyScore,s[i].engScore,s[i].sumScore);
		} 
	}
}

void Order(struct Stu s[]){
	toCode(s);
	for(int i=0;i<MAX_STU;i++){
		if(s[i].code!=0){
			for(int j=0;s[j+1].code!=0;j++){
			    if(s[j].cla>s[j+1].cla){
				    struct Stu tem=s[j];
				    s[j]=s[j+1];
				    s[j+1]=tem;
			    }
		    }
		}
	}
	for(int i=0;i<MAX_STU;i++){
		if(s[i].code!=0){
			for(int j=0;s[j+1].code!=0;j++){
			    if(s[j].cla==s[j+1].cla&&s[j].sumScore<s[j+1].sumScore){
				    struct Stu tem=s[j];
				    s[j]=s[j+1];
				    s[j+1]=tem;
			    }
		    }
		}
	}
	Output(s);
}

void delStu(struct Stu s[]){
	toCode(s);
	char waitDel[10];
	scanf("%s",&waitDel);
	for(int i=0;i<MAX_STU;i++){
		if(strcmp(waitDel, s[i].num) == 0 || strcmp(waitDel, s[i].name) == 0){
			s[i]=s[MAX_STU];
		}
	}
	Output(s);
}

void findStu(struct Stu s[]){
	toCode(s);
	int a=0;
	int flag=1;
	scanf("%d",&a);
	for(int i=0;i<MAX_STU;i++){
		if(s[i].code==a||s[i].cla==a){
			printf("%s  %d  %s  %.1f  %.1f  %.1f\n",s[i].num,s[i].cla,s[i].name,s[i].mathScore,s[i].phyScore,s[i].engScore,s[i].sumScore);
			flag=0;
		}
	}
	if(flag)
	printf("there is no eligible student\n");
}

int Meum(struct Stu s[]){
	printf("                             1.Input\n");
	printf("                             2.Delete\n");
	printf("                             3.Select\n");
	printf("                             4.Order\n");
	printf("                             5.Output\n");
	printf("                             6.Quit\n");
	printf("please input your option\n");
	int a;
	scanf("%d",&a);
	char reward[5];
	switch(a){
		case 1:
			do{
				Input(s);
				printf("continue?\n");
				scanf("%s",&reward);
			}
			while(strcmp(reward, "yes")==0);
			break;
		case 2:
			do{
				delStu(s);
				printf("continue?\n");
				scanf("%s",&reward);
			}
			while(strcmp(reward, "yes")==0);
			break;
		case 3:
			do{
				findStu(s);
				printf("continue?\n");
				scanf("%s",&reward);
			}
			while(strcmp(reward, "yes")==0);
			break;
		case 4:
			do{
				Order(s);
				printf("continue?\n");
				scanf("%s",&reward);
			}
			while(strcmp(reward, "yes")==0);
			break;
		case 5:
			do{
				Output(s);
				printf("continue?\n");
				scanf("%s",&reward);
			}
			while(strcmp(reward, "yes")==0);
			break;
	}
	return a;
}

int main(){
	struct Stu s[MAX_STU+1];
	for (int i = 0; i < MAX_STU+1; ++i) {
		s[i].code=0;
        memset(s[i].num, 0, sizeof(s[i].num));
        s[i].cla = 0;
        memset(s[i].name, 0, sizeof(s[i].name));
        s[i].mathScore = 0.0f;
        s[i].phyScore = 0.0f;
        s[i].engScore = 0.0f;
        s[i].sumScore = 0.0f;
        s[i].aveScore = 0.0f;
        s[i].isInserted = false;
        s[i].isModified = false;
    }
	while(Meum(s)!=6);
	return 0;
}

//strcpy(s[0].num, "10001");
//    s[0].code=1; 
//    s[0].cla = 11;
//    strcpy(s[0].name, "Zhang");
//    s[0].mathScore = 99.5f;
//    s[0].phyScore = 88.5f;
//    s[0].engScore = 89.5f;
//    s[0].sumScore = s[0].mathScore + s[0].phyScore + s[0].engScore;
//    s[0].aveScore = s[0].sumScore / 3.0f;
//
//    strcpy(s[1].num, "10002");
//    s[1].code=2; 
//    s[1].cla = 12;
//    strcpy(s[1].name, "Yang");
//    s[1].mathScore = 77.9f;
//    s[1].phyScore = 56.5f;
//    s[1].engScore = 87.5f;
//    s[1].sumScore = s[1].mathScore + s[1].phyScore + s[1].engScore;
//    s[1].aveScore = s[1].sumScore / 3.0f;
//
//    strcpy(s[2].num, "10003");
//    s[2].code=3; 
//    s[2].cla = 11;
//    strcpy(s[2].name, "Liang");
//    s[2].mathScore = 92.5f;
//    s[2].phyScore = 99.0f;
//    s[2].engScore = 60.5f;
//    s[2].sumScore = s[2].mathScore + s[2].phyScore + s[2].engScore;
//    s[2].aveScore = s[2].sumScore / 3.0f;
//    
//    strcpy (s[3].num,"10004");
//    s[3].code=4;
//    s[3].cla=11;
//    strcpy(s[3].name,"Cai");
//    s[3].mathScore=89.6f;
//    s[3].phyScore=56.9f;
//    s[3].engScore=90.5f;
//    s[3].sumScore=s[3].mathScore+s[3].phyScore+s[3].engScore;
//    s[3].aveScore=s[3].sumScore/3.0f;
//
//    strcpy (s[4].num,"10005");
//    s[4].code=5;
//    s[4].cla=14;
//    strcpy(s[4].name,"Fu");
//    s[4].mathScore=55.6f;
//    s[4].phyScore=67.9f;
//    s[4].engScore=98.9f;
//    s[4].sumScore=s[4].mathScore+s[4].phyScore+s[4].engScore;
//    s[4].aveScore=s[4].sumScore/3.0f;
//
//strcpy (s[5].num,"10006");
//s[5].code=6;
//s[5].cla=12;
//strcpy(s[5].name,"Mao");
//s[5].mathScore=22.1f;
//s[5].phyScore=45.9f;
//s[5].engScore=99.2f;
//s[5].sumScore=s[5].mathScore+s[5].phyScore+s[5].engScore;
//s[5].aveScore=s[5].sumScore/3.0f;
//
//strcpy (s[6].num,"10007");
//s[6].code=7;
//s[6].cla=13;
//strcpy(s[6].name,"Zhan");
//s[6].mathScore=35.6f;
//s[6].phyScore=67.9f;
//s[6].engScore=88.0f;
//s[6].sumScore=s[6].mathScore+s[6].phyScore+s[6].engScore;
//s[6].aveScore=s[6].sumScore/3.0f;