#include <stdio.h>
int main()
{
	int a, gia=0;
	char loaiphong;
	printf_s("So ngay thue phong cua ban la: ");
	scanf_s("%d", &a);
	printf_s("Loai phong ban muon thue la: ");
	scanf_s("%ch", &loaiphong);
	if (a <= 0) printf("Khong hop le");
	else
	{
		if (loaiphong = 'A')
		{
			if (a < 12) 
{ 
gia = 450000 * a;
	printf_s("Gia tien thue phong cua ban la %d: ", gia);
}
			else printf_s("Gia tien thue phong cua ban la %p: ", 450000 * a * 0.9);
		}
	}
	//maycausautuongtu

	return 0;
}