"HDU 4445" Crazy Tank (violence)

High school physics oblique throw movement, the simple analysis angle fixed down can calculate each cannonball's landing coordinate lnd.

So violence calculates results at different angles.

#include <cstdio> #include "cmath" #include "algorithm" #define LL long long#define DD double#define N 205#define g 9.8 #define EPS 1e-6const DD pi=acos ( -1.0); ll h,l1,l2,r1,r2,n;dd v[n];using namespace Std;int main () {while (scanf ("%d",& N) {scanf ("%d%d%d%d%d", &H,&L1,&R1,&L2,&R2), for (int i=1;i<=n;i++) scanf ("%lf", &v[i]) ; int Lans=0;for (dd d=0;d<1;d+=1./360) {int ans=0,ok=1;dd s=sin (d*pi);dd C=cos (D*PI); for (int i=1;i<=n;i++) {dd vx= V[I]*S;DD vy=v[i]*c;dd t= (sqrt (2*h*g+vy*vy)-vy)/g;dd lnd=vx*t;if (lnd>=l2&&r2>=lnd) {ok=0;break;} if (LND>=L1&&R1>=LND) ans++;} if (OK) Lans=max (Ans,lans);} printf ("%d\n", LANs);}}

　　

"HDU 4445" Crazy Tank (violence)