View Code of Problem 104

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int main()
{
    int n,v1,v2,t;
    double meet;
    while(scanf("%d %d %d %d",&n,&v1,&v2,&t)!=EOF){
        if(v2>=v1){
            printf("NO\n");
        }else{
            meet=n*1000.0/(v1-v2);
            if(meet>t){
                printf("NO\n");
            }else{
                printf("%.2lf\n",meet);
            }
        }
    }
    return 0;
}