zoj 1852 Billiard

#include <iostream>#include <cmath>#include <cstdio>#include <algorithm>using namespace std;const double pi = acos(-1.0);int main(){    int a, b, s, m, n;    while(scanf("%d %d %d %d %d", &a, &b, &s, &m, &n)){       if(a==0 && b==0 && s==0 && m==0 && n==0)break;       double A = atan( (1.0*n*b)/(m*a));       double v = 1.0*n*b/(1.0*s*sin(A));    A = (A/pi)*180; printf("%.2lf %.2lfn", A, v);    }    return 0;}