View Code of Problem 104

#include <stdio.h>

int main(int argv, char *argc[])
{
        int n, v1, v2, t, disp;
        float time;
        while(scanf("%d", &n) != EOF){
              scanf("%d%d%d", &v1, &v2, &t);
              disp = v1 - v2;    
			  if(disp * t < n){
			      printf("NO\n");
              }else{
                      time = (float)n * 1000 / disp;
					  printf("%.2f\n", time);  
			  }
		}
        return 0;
}

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