#include <cstdio>#include <cmath>#include <cstdlib>#define pi 4*atan(1)int main(){ double d,h; scanf("%lf%lf",&d,&h); double a,b,c; while(scanf("%lf%lf%lf",&a,&b,&c),fabs(a-0)>0.00000001||fabs(b-0)>0.00000001||fabs(c-0)>0.00000001){ //double H = d*sqrt(2/(1.0/(tan(a/180.0*pi))*(tan(a/180.0*pi))+1.0/(tan(c/180.0*pi))*(tan(c/180.0*pi))-2.0/(tan(b/180.0*pi))*(tan(b/180.0*pi)))); double aa = tan(a*pi/180.0); double bb = tan(b*pi/180.0); double cc = tan(c*pi/180.0); double H = d*sqrt(2/(1.0/aa/aa+1.0/cc/cc-2.0/bb/bb)); H = H+h; int rusult; if (H-(int)H>=0.5) rusult = (int)H+1; else rusult = (int)H; printf("%dn",rusult); }}
