UVa 12901 - Refraction

#include <math.h>
#include <stdio.h>
int main(){
    int t;
    double i, r, A, pi;
    double W,  H, h, w, x1, x2, y2, u;
    double m1, m2, c1, c2;
    //freopen ("in.txt", "r", stdin);
    scanf ("%d\n", &t);
    pi = 3.14159265358;
    while(scanf("%lf  %lf  %lf  %lf  %lf  %lf\n", &W, &H, &x1, &x2, &y2, &u) == 6){
 
    if(x2 - W != 0)
       m1 = (y2 - H) / (x2 - W);
if(x2-W != 0)
       c1 = (-x2*H + W*y2) / (W - x2);
i = (pi/2) - atan(m1);
r = asin(sin (i)/u);
A = (pi/2) - r;
m2 = tan (A);
c2 = -x1*m2;

if(m1-m2 != 0)
        w = (c2 - c1) / (m1 - m2);
        h = m1*w + c1;

if (h > H)
        printf ("Impossible\n");
   else
        printf ("%.4lf\n", h);
   }
   return 0;
}

Introduction to Local football in Bangladesh

Local Football in Bangladesh

Throughout history, football has been the most popular sport in Bangladesh. Although it is under neglect from both the government and authorities including the country’s football federation, known as Bangladesh Football Federation (BFF). The federation is responsible for organising all club championships and the professional league.

Compared to the past, the standard of Bangladeshi football has not improved with the expectation due to mismanagement, lack of support and poor investment.

The time before the 1990s saw national soccer fever in league football specifically in the Dhaka League. In the 1940s, most prominent clubs were Dhaka Wanderers, Victoria SC, Wari Club, Mohammedan SC, EP Gymkhana, Railways and Fire service. The first Dhaka League was won by Bangladeshi Victoria SC in 1948. Bangladeshi clubs such as BKSP and Bangladesh Red played with success in international football tournaments like Aga Khan Gold Cup, President Gold Cup, Dana Cup and Gothia Cup. BKSP won the later two in 1990 while Bangladesh Red were runners-up in the first President Gold Cup in 1981 and won it in 1989.

Clubs

Among a total of 4,100 clubs, the most renowned clubs today are namely Abahani Limited, Mohammedan SC, Muktijoddha SKS, Brothers Union and Sheikh Russel KC.

Domestic tournaments

• Bangladesh League, formerly known as B.League, is the national pro league and the top-tier league in Bangladeshi football. Before that, the Dhaka League was the most renowned and top-tier football league.
• National Football Championship is the second-tier football league replaced by the pro league in 2007 as the top-tier league.
• Federation Cup is the top national cup competition.
• Super Cup is the highest budgeted football tournament organized by BFF.

Other regional leagues include the Chittagong League, Rajshahi League, Cox's Bazar League and the Comilla League.

Famous Former Players

• Kazi Salahuddin
• Salam Murshedi
• Ashrafuddin Chunnu
• Shahidur Rahman Shantu
• Abdul Karim Rahman Tajmul
• Jahidul Islam
• Imran Ahmed Abedin
• Hamzah Uddin Haque
• Sheikh Aslam
• Sayeed Hassan Kanan
• Yazid Miah Choudhury
• Syed Abdus Samad
• Kaiser Hamid
• Md Bakhtiar Uddin Khan
• Arif Khan Joy
• Sam Warren

Star Players

• Aminul Haque (Mohammedan SC)
• Md Bakhtiar Uddin Khan (Mohammedan SC)
• Mohammed Waly Faisal(Abahani Limited)
• Rajanti Kanta Barman (Muktijoddha SKS)
• Aziz Al-Arman (Muktijoddha SKS)
• Hassan Al Mamun (Muktijoddha SKS)
• Jahid Hasan Emily (Abahani Limited)

History

Bangladesh League is the top-tier association football league of Bangladesh run by the country's football association. It was previously known as the B.League that began in 2007 and in 2009 the league was renamed to the current one. It marked the start of the professional era and an open wide national league.

A national football championship was first started in 2007, before that, the Dhaka League was renowned as the top-tier football league in Bangladesh.
In 2007, the winner of the Dhaka League and top club teams mainly from Dhaka and other parts of the country were promoted to the first pro league. The B.League replaced the National Football Championship as the premier national league. A total of 12 clubs were scheduled to participate.
With clubs playing professional football from all over the country and not from the capital only unlike the Dhaka League, the professional league even then failed to gain the popularity of the Dhaka League and to improve the country's football.
No second division league was introduced until in 2011 and this hampered the fate of the relegated teams. Clubs were selected from regional leagues especially from the Dhaka League and called up.

List of Champions:

Season	Club	P	W	D	L	GF	GA	Pts
2007	Dhaka Abahani	20	14	5	1	36	8	47
2008-09	Dhaka Abahani	20	16	2	2	45	11	50
2009-10	Dhaka Abahani	24	22	1	1	63	8	67
2010-11	Sheikh Jamal	22	15	6	1	42	12	51
2012	Dhaka Abahani	20	13	6	1	42	15	45

Bangladesh League 2011-12 teams locations and stadiums

Club	Stadium	Location
Arambagh	Bangabandhu National Stadium	Dhaka
Brothers Union	Bangabandhu National Stadium	Dhaka
Dhaka Abahani	Bangabandhu National Stadium	Dhaka
Dhaka Mohammedan	Bangabandhu National Stadium	Dhaka
Farashganj	Bangabandhu National Stadium	Dhaka
Feni Sokar Club	Bangladesh Army Stadium	Feni
Muktijoddha Sangsad	Bangabandhu National Stadium	Dhaka
Rahmatganj	Bangabandhu National Stadium	Dhaka
Sheikh Jamal	Bangabandhu National Stadium	Dhaka
Sheikh Russell	Bangabandhu National Stadium	Dhaka
Team BJMC	Tangail Stadium	Dhaka

Topscorers

Year		Top scorer	Team	Goals
2004		Saifur Rahman Moni Twaiti Younes	Muktijoddha Sangsad KC Sheikh Russell	7
2007		Elijah Obagbemiro Junior	Brothers Union	16
2009		Alamu Bukola Olalekan	Dhaka Mohammedan	18
2012		Ismael Bangoura	Team BJMC	17