cockchaf.c

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define PI 3.14159265358979323
 
int main(){
	int S, T;
	while(scanf("%d %d", &S, &T) == 2){
		int xt, yt, xf, yf;
		scanf("%d %d %d %d", &xf, &yf, &xt, &yt);
		double x = fabs(xt-xf);
		double y = fabs(yt-yf);
		double L = sqrt(x*x+y*y);
		double D = acos(x/L) * 180 / PI;
		if(yf > yt)
			D = 90 + D;
		else if(yf < yt)
			D = 90 - D;
		else
			D = 90;
		double R = L/S + D/T;
		printf("%f\n", R);
	}
	return 0;
}