HDU 4969 Just a Joke (points), hdu4969

HDU 4969 Just a Joke (points), hdu4969
HDU 4969 Just a Joke

Question Link

Push formula,R'=DR/DT=VY=V22−V12R2/R2 −−−−−−−−−−−− √. The integral formula is as follows:
BytesR0Y= 1/V22−V12X2/R2 − √. You can simply use a triangle to replace it.

Code:

# Include <cstdio> # include <cstring> # include <cmath> typedef long ll; int t; double v1, v2, r, d; int main () {scanf ("% d", & t); while (t --) {scanf ("% lf", & v1, & v2, & r, & d); double ti = asin (r * v1/r/v2) * r/v1-asin (0.0) * r/v1; if (ti * v2> d) printf ("Why give up treatment \ n"); else printf ("Wake up to code \ n");} return 0 ;}