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

long double speed_ratio(int M, int m){
	return pow(M/m, 0.2);
}

int main(){
	int M, m;
	scanf("%d %d", &M, &m);
	printf("[int] speed ratio : %.20Lf", speed_ratio(M, m));
	return 0;
}