#include <stdio.h>
int main(void)
{
	short hours_left, rate;
	float ticket_price, refund_amount;
	printf("Enter price of ticket: ");
	scanf("%f", &ticket_price);
	printf("Number of hours before train departure: ");
	scanf("%hd", &hours_left);

	if (ticket_price <= 0) {
		printf("Price can't be negative\n");
		return 1;
	}
	else if (ticket_price > 10000) {
		printf("Price can't exceed Rs 10,000.\n");
		return 1;
	}
	else if (hours_left > 48)
		rate = 0;
	else if (hours_left > 6)
		rate = 25;
	else if (hours_left > -2)		/* 2 hours after departure */
		rate = 50;
	else
		rate = 100;			/* No refund */
	refund_amount = ticket_price *(100 - rate) / 100;
	printf("Refund amount %.2f\n", refund_amount);
	return 0;
}