#include<stdio.h>
int main()
{
int a,b;
float c;
scanf("%d %d",&a,&b);
c=b/100.0; //主要是这步
printf("%.2f",a/(c*c));
return 0;
}
int main()
{
int a,b;
float c;
scanf("%d %d",&a,&b);
c=b/100.0; //主要是这步
printf("%.2f",a/(c*c));
return 0;
}