View Code of Problem 104

#include<stdio.h>
#include<math.h>
void main()
{
	float n, v1, v2, t;
	while (scanf("%f %f %f %f",&n,&v1,&v2,&t)!=EOF)
	{
		if (n == 0) printf("0.00\n");
		if (v1 - v2 < 0)printf("No\n");
		else
		{
			if ((n * 1000)/ (v1 - v2) <= t)
				printf("%.2f\n", (1000 * n) / (v1 - v2));
			else
				printf("No\n");
		}
	}
}