题解 | #KiKi和酸奶#

#include <stdio.h>

int main()
{
	int n = 0;
	int h = 0;
	int m = 0;
	int s = 0;//剩几盒
	while (scanf("%d %d %d", &n, &h, &m))
	{
		if (m > n * h)
		{
			printf("输入错误，请重新输入\n");
		}
		else
		{
			if (m < h)
			{
				s = n - 1;
				break;
			}
			else
			{
				if (m % h == 0)
				{
					int ret = m / h;
					s = n - ret;
				}
				else
				{
					int ret = m / h;
					s = n - ret - 1;
				}
				printf("%d", s);
				break;
			}
		}

	}
	return 0;
}