/*
Problem 1
One airline company charges 15% extra for tickets in the first 5 rows 
and gives 7% discount for tickets in the last 5 rows. 
Write a program that first reads the base price for one ticket and 
the number of rows on the airpline. Two family members are boarding the plane. 
The program reads the row number of each ticket. 
The program finds the final cost of each ticket, 
the total cost of the tickets, and the average ticket price. You can assume that input is valid. 

Example
price=299.99
total_rows=15
person1 row = 2
person2 row = 13

total=299.99*(1+15/100.0)+299.99*(1-7/100.0)=623.9792

15 rows
5 first rows: 1, 2, 3, 4,5
5 last rows: 15, 14, 13, 12, 11
*/
#include<stdio.h>
int main(){
	int num_rows, row_num,size_family, i=0;
	double price, total=0.0;
	printf("enter number of family members\n");
	scanf("%d",&size_family);
	//assume input valid
	printf("enter number of rows\n");
	scanf("%d",&num_rows);
	printf("enter base price\n");
	scanf("%lf",&price);

	while(i<size_family){
		printf("enter row for family member %d\n",i+1);
		scanf("%d",&row_num);
		if(row_num<5)
			total+=price*1.15;
		else if(row_num>num_rows-5)
			total+=price*0.93;
		else
			total+=price;
		i++;
	}
	printf("total price %f\n",total);
	return 0;
}